Home / 1,565.24-2,346.64-915.21

Finding the Fourth Proportional to 1,565.24, 2,346.64 and 915.21

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Solution

The fourth proportional to 1,565.24, 2,346.64 and 915.21 is: 1,372.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565.24 : 2,346.64 = 915.21 : x
  2. Step 2: Convert to fraction form
    1,565.24/2,346.64 = 915.21/x
  3. Step 3: Cross multiply
    1,565.24x = 2,346.64 × 915.21
  4. Step 4: Simplify right side
    1,565.24x = 2,147,666.11
  5. Step 5: Solve for x
    x = 2,147,666.11/1,565.24
  6. Step 6: Final answer
    x = 1,372.10

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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.