Home / 2,565.47-3,847.30-921.58

Finding the Fourth Proportional to 2,565.47, 3,847.30 and 921.58

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Solution

The fourth proportional to 2,565.47, 3,847.30 and 921.58 is: 1,382.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,565.47 : 3,847.30 = 921.58 : x
  2. Step 2: Convert to fraction form
    2,565.47/3,847.30 = 921.58/x
  3. Step 3: Cross multiply
    2,565.47x = 3,847.30 × 921.58
  4. Step 4: Simplify right side
    2,565.47x = 3,545,582.81
  5. Step 5: Solve for x
    x = 3,545,582.81/2,565.47
  6. Step 6: Final answer
    x = 1,382.04

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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.