Home / 2,565.08-3,847.20-921.32

Finding the Fourth Proportional to 2,565.08, 3,847.20 and 921.32

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Solution

The fourth proportional to 2,565.08, 3,847.20 and 921.32 is: 1,381.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,565.08 : 3,847.20 = 921.32 : x
  2. Step 2: Convert to fraction form
    2,565.08/3,847.20 = 921.32/x
  3. Step 3: Cross multiply
    2,565.08x = 3,847.20 × 921.32
  4. Step 4: Simplify right side
    2,565.08x = 3,544,502.30
  5. Step 5: Solve for x
    x = 3,544,502.30/2,565.08
  6. Step 6: Final answer
    x = 1,381.83

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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.