Home / 2,180.26-3,009.16-1,248.76

Finding the Fourth Proportional to 2,180.26, 3,009.16 and 1,248.76

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Solution

The fourth proportional to 2,180.26, 3,009.16 and 1,248.76 is: 1,723.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.26 : 3,009.16 = 1,248.76 : x
  2. Step 2: Convert to fraction form
    2,180.26/3,009.16 = 1,248.76/x
  3. Step 3: Cross multiply
    2,180.26x = 3,009.16 × 1,248.76
  4. Step 4: Simplify right side
    2,180.26x = 3,757,718.64
  5. Step 5: Solve for x
    x = 3,757,718.64/2,180.26
  6. Step 6: Final answer
    x = 1,723.52

Related Problems

Find fourth proportional to 1,090.13, 1,504.58 and 624.38
Half scale
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Double scale
Find fourth proportional to 2,181.26, 3,010.54 and 1,249.76
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.