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Finding the Fourth Proportional to 5,130.72, 7,696.08 and 3,962.43

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Solution

The fourth proportional to 5,130.72, 7,696.08 and 3,962.43 is: 5,943.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.72 : 7,696.08 = 3,962.43 : x
  2. Step 2: Convert to fraction form
    5,130.72/7,696.08 = 3,962.43/x
  3. Step 3: Cross multiply
    5,130.72x = 7,696.08 × 3,962.43
  4. Step 4: Simplify right side
    5,130.72x = 30,495,178.27
  5. Step 5: Solve for x
    x = 30,495,178.27/5,130.72
  6. Step 6: Final answer
    x = 5,943.65

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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.