Home / 8,565.89-12,851.60-3,639.74

Finding the Fourth Proportional to 8,565.89, 12,851.60 and 3,639.74

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Solution

The fourth proportional to 8,565.89, 12,851.60 and 3,639.74 is: 5,460.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,565.89 : 12,851.60 = 3,639.74 : x
  2. Step 2: Convert to fraction form
    8,565.89/12,851.60 = 3,639.74/x
  3. Step 3: Cross multiply
    8,565.89x = 12,851.60 × 3,639.74
  4. Step 4: Simplify right side
    8,565.89x = 46,776,400.13
  5. Step 5: Solve for x
    x = 46,776,400.13/8,565.89
  6. Step 6: Final answer
    x = 5,460.78

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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.