Home / 1,417.77-2,126.61-724.73

Finding the Fourth Proportional to 1,417.77, 2,126.61 and 724.73

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Solution

The fourth proportional to 1,417.77, 2,126.61 and 724.73 is: 1,087.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.77 : 2,126.61 = 724.73 : x
  2. Step 2: Convert to fraction form
    1,417.77/2,126.61 = 724.73/x
  3. Step 3: Cross multiply
    1,417.77x = 2,126.61 × 724.73
  4. Step 4: Simplify right side
    1,417.77x = 1,541,207.43
  5. Step 5: Solve for x
    x = 1,541,207.43/1,417.77
  6. Step 6: Final answer
    x = 1,087.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.