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Finding the Fourth Proportional to 7,281.70, 10,922.55 and 7,152.10

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Solution

The fourth proportional to 7,281.70, 10,922.55 and 7,152.10 is: 10,728.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,281.70 : 10,922.55 = 7,152.10 : x
  2. Step 2: Convert to fraction form
    7,281.70/10,922.55 = 7,152.10/x
  3. Step 3: Cross multiply
    7,281.70x = 10,922.55 × 7,152.10
  4. Step 4: Simplify right side
    7,281.70x = 78,119,169.86
  5. Step 5: Solve for x
    x = 78,119,169.86/7,281.70
  6. Step 6: Final answer
    x = 10,728.15

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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.