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Finding the Fourth Proportional to 7,380.90, 11,071.35 and 7,060.95

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Solution

The fourth proportional to 7,380.90, 11,071.35 and 7,060.95 is: 10,591.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,380.90 : 11,071.35 = 7,060.95 : x
  2. Step 2: Convert to fraction form
    7,380.90/11,071.35 = 7,060.95/x
  3. Step 3: Cross multiply
    7,380.90x = 11,071.35 × 7,060.95
  4. Step 4: Simplify right side
    7,380.90x = 78,174,248.78
  5. Step 5: Solve for x
    x = 78,174,248.78/7,380.90
  6. Step 6: Final answer
    x = 10,591.43

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Half scale
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Double scale
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Similar ratio
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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.