Home / 1,665.20-2,498.15-625.19

Finding the Fourth Proportional to 1,665.20, 2,498.15 and 625.19

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Solution

The fourth proportional to 1,665.20, 2,498.15 and 625.19 is: 937.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,665.20 : 2,498.15 = 625.19 : x
  2. Step 2: Convert to fraction form
    1,665.20/2,498.15 = 625.19/x
  3. Step 3: Cross multiply
    1,665.20x = 2,498.15 × 625.19
  4. Step 4: Simplify right side
    1,665.20x = 1,561,807.47
  5. Step 5: Solve for x
    x = 1,561,807.47/1,665.20
  6. Step 6: Final answer
    x = 937.91

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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.