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Finding the Fourth Proportional to 7,392.70, 11,089.05 and 5,327.20

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Solution

The fourth proportional to 7,392.70, 11,089.05 and 5,327.20 is: 7,990.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,392.70 : 11,089.05 = 5,327.20 : x
  2. Step 2: Convert to fraction form
    7,392.70/11,089.05 = 5,327.20/x
  3. Step 3: Cross multiply
    7,392.70x = 11,089.05 × 5,327.20
  4. Step 4: Simplify right side
    7,392.70x = 59,073,587.16
  5. Step 5: Solve for x
    x = 59,073,587.16/7,392.70
  6. Step 6: Final answer
    x = 7,990.80

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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.