Home / 1,557.29-2,335.70-517.27

Finding the Fourth Proportional to 1,557.29, 2,335.70 and 517.27

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Solution

The fourth proportional to 1,557.29, 2,335.70 and 517.27 is: 775.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.29 : 2,335.70 = 517.27 : x
  2. Step 2: Convert to fraction form
    1,557.29/2,335.70 = 517.27/x
  3. Step 3: Cross multiply
    1,557.29x = 2,335.70 × 517.27
  4. Step 4: Simplify right side
    1,557.29x = 1,208,177.64
  5. Step 5: Solve for x
    x = 1,208,177.64/1,557.29
  6. Step 6: Final answer
    x = 775.82

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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.