Home / 1,665.16-2,497.13-691.34

Finding the Fourth Proportional to 1,665.16, 2,497.13 and 691.34

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Solution

The fourth proportional to 1,665.16, 2,497.13 and 691.34 is: 1,036.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,665.16 : 2,497.13 = 691.34 : x
  2. Step 2: Convert to fraction form
    1,665.16/2,497.13 = 691.34/x
  3. Step 3: Cross multiply
    1,665.16x = 2,497.13 × 691.34
  4. Step 4: Simplify right side
    1,665.16x = 1,726,352.50
  5. Step 5: Solve for x
    x = 1,726,352.50/1,665.16
  6. Step 6: Final answer
    x = 1,036.75

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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.