Home / 2,848.12-3,931.14-1,800.76

Finding the Fourth Proportional to 2,848.12, 3,931.14 and 1,800.76

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Solution

The fourth proportional to 2,848.12, 3,931.14 and 1,800.76 is: 2,485.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,848.12 : 3,931.14 = 1,800.76 : x
  2. Step 2: Convert to fraction form
    2,848.12/3,931.14 = 1,800.76/x
  3. Step 3: Cross multiply
    2,848.12x = 3,931.14 × 1,800.76
  4. Step 4: Simplify right side
    2,848.12x = 7,079,039.67
  5. Step 5: Solve for x
    x = 7,079,039.67/2,848.12
  6. Step 6: Final answer
    x = 2,485.51

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Find fourth proportional to 1,424.06, 1,965.57 and 900.38
Half scale
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Double scale
Find fourth proportional to 2,849.12, 3,932.52 and 1,801.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.