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Finding the Fourth Proportional to 7,689.08, 10,613.50 and 4,861.17

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Solution

The fourth proportional to 7,689.08, 10,613.50 and 4,861.17 is: 6,710.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,689.08 : 10,613.50 = 4,861.17 : x
  2. Step 2: Convert to fraction form
    7,689.08/10,613.50 = 4,861.17/x
  3. Step 3: Cross multiply
    7,689.08x = 10,613.50 × 4,861.17
  4. Step 4: Simplify right side
    7,689.08x = 51,594,015.64
  5. Step 5: Solve for x
    x = 51,594,015.64/7,689.08
  6. Step 6: Final answer
    x = 6,710.04

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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.