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Finding the Fourth Proportional to 7,691.50, 10,614.32 and 4,506.68

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Solution

The fourth proportional to 7,691.50, 10,614.32 and 4,506.68 is: 6,219.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,691.50 : 10,614.32 = 4,506.68 : x
  2. Step 2: Convert to fraction form
    7,691.50/10,614.32 = 4,506.68/x
  3. Step 3: Cross multiply
    7,691.50x = 10,614.32 × 4,506.68
  4. Step 4: Simplify right side
    7,691.50x = 47,835,268.05
  5. Step 5: Solve for x
    x = 47,835,268.05/7,691.50
  6. Step 6: Final answer
    x = 6,219.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.