Home / 2,155.24-3,217.17-1,994.76

Finding the Fourth Proportional to 2,155.24, 3,217.17 and 1,994.76

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Solution

The fourth proportional to 2,155.24, 3,217.17 and 1,994.76 is: 2,977.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.24 : 3,217.17 = 1,994.76 : x
  2. Step 2: Convert to fraction form
    2,155.24/3,217.17 = 1,994.76/x
  3. Step 3: Cross multiply
    2,155.24x = 3,217.17 × 1,994.76
  4. Step 4: Simplify right side
    2,155.24x = 6,417,482.03
  5. Step 5: Solve for x
    x = 6,417,482.03/2,155.24
  6. Step 6: Final answer
    x = 2,977.62

Related Problems

Find fourth proportional to 1,077.62, 1,608.59 and 997.38
Half scale
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Double scale
Find fourth proportional to 2,156.24, 3,218.66 and 1,995.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.