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Finding the Fourth Proportional to 8,759.78, 12,088.38 and 4,780.92

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Solution

The fourth proportional to 8,759.78, 12,088.38 and 4,780.92 is: 6,597.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,759.78 : 12,088.38 = 4,780.92 : x
  2. Step 2: Convert to fraction form
    8,759.78/12,088.38 = 4,780.92/x
  3. Step 3: Cross multiply
    8,759.78x = 12,088.38 × 4,780.92
  4. Step 4: Simplify right side
    8,759.78x = 57,793,577.71
  5. Step 5: Solve for x
    x = 57,793,577.71/8,759.78
  6. Step 6: Final answer
    x = 6,597.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.