Home / 8,780.64-13,156.14-6,178.92

Finding the Fourth Proportional to 8,780.64, 13,156.14 and 6,178.92

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Solution

The fourth proportional to 8,780.64, 13,156.14 and 6,178.92 is: 9,257.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.64 : 13,156.14 = 6,178.92 : x
  2. Step 2: Convert to fraction form
    8,780.64/13,156.14 = 6,178.92/x
  3. Step 3: Cross multiply
    8,780.64x = 13,156.14 × 6,178.92
  4. Step 4: Simplify right side
    8,780.64x = 81,290,736.57
  5. Step 5: Solve for x
    x = 81,290,736.57/8,780.64
  6. Step 6: Final answer
    x = 9,257.95

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1.5x scale

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.