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Finding the Fourth Proportional to 8,726.60, 13,070.28 and 6,772.88

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Solution

The fourth proportional to 8,726.60, 13,070.28 and 6,772.88 is: 10,144.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,726.60 : 13,070.28 = 6,772.88 : x
  2. Step 2: Convert to fraction form
    8,726.60/13,070.28 = 6,772.88/x
  3. Step 3: Cross multiply
    8,726.60x = 13,070.28 × 6,772.88
  4. Step 4: Simplify right side
    8,726.60x = 88,523,438.01
  5. Step 5: Solve for x
    x = 88,523,438.01/8,726.60
  6. Step 6: Final answer
    x = 10,144.09

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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.