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Finding the Fourth Proportional to 7,866.60, 10,850.20 and 5,344.30

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Solution

The fourth proportional to 7,866.60, 10,850.20 and 5,344.30 is: 7,371.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,866.60 : 10,850.20 = 5,344.30 : x
  2. Step 2: Convert to fraction form
    7,866.60/10,850.20 = 5,344.30/x
  3. Step 3: Cross multiply
    7,866.60x = 10,850.20 × 5,344.30
  4. Step 4: Simplify right side
    7,866.60x = 57,986,723.86
  5. Step 5: Solve for x
    x = 57,986,723.86/7,866.60
  6. Step 6: Final answer
    x = 7,371.26

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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.