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Finding the Fourth Proportional to 7,871.69, 10,863.11 and 4,335.10

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Solution

The fourth proportional to 7,871.69, 10,863.11 and 4,335.10 is: 5,982.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,871.69 : 10,863.11 = 4,335.10 : x
  2. Step 2: Convert to fraction form
    7,871.69/10,863.11 = 4,335.10/x
  3. Step 3: Cross multiply
    7,871.69x = 10,863.11 × 4,335.10
  4. Step 4: Simplify right side
    7,871.69x = 47,092,668.16
  5. Step 5: Solve for x
    x = 47,092,668.16/7,871.69
  6. Step 6: Final answer
    x = 5,982.54

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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.