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Finding the Fourth Proportional to 7,690.87, 10,613.96 and 5,799.12

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Solution

The fourth proportional to 7,690.87, 10,613.96 and 5,799.12 is: 8,003.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,690.87 : 10,613.96 = 5,799.12 : x
  2. Step 2: Convert to fraction form
    7,690.87/10,613.96 = 5,799.12/x
  3. Step 3: Cross multiply
    7,690.87x = 10,613.96 × 5,799.12
  4. Step 4: Simplify right side
    7,690.87x = 61,551,627.72
  5. Step 5: Solve for x
    x = 61,551,627.72/7,690.87
  6. Step 6: Final answer
    x = 8,003.21

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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.