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Finding the Fourth Proportional to 4,757.40, 7,136.10 and 4,247.10

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Solution

The fourth proportional to 4,757.40, 7,136.10 and 4,247.10 is: 6,370.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,757.40 : 7,136.10 = 4,247.10 : x
  2. Step 2: Convert to fraction form
    4,757.40/7,136.10 = 4,247.10/x
  3. Step 3: Cross multiply
    4,757.40x = 7,136.10 × 4,247.10
  4. Step 4: Simplify right side
    4,757.40x = 30,307,730.31
  5. Step 5: Solve for x
    x = 30,307,730.31/4,757.40
  6. Step 6: Final answer
    x = 6,370.65

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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.