Home / 1,557.10-2,335.76-517.18

Finding the Fourth Proportional to 1,557.10, 2,335.76 and 517.18

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Solution

The fourth proportional to 1,557.10, 2,335.76 and 517.18 is: 775.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.10 : 2,335.76 = 517.18 : x
  2. Step 2: Convert to fraction form
    1,557.10/2,335.76 = 517.18/x
  3. Step 3: Cross multiply
    1,557.10x = 2,335.76 × 517.18
  4. Step 4: Simplify right side
    1,557.10x = 1,208,008.36
  5. Step 5: Solve for x
    x = 1,208,008.36/1,557.10
  6. Step 6: Final answer
    x = 775.81

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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.