Home / 5,269.76-7,856.61-5,135.12

Finding the Fourth Proportional to 5,269.76, 7,856.61 and 5,135.12

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Solution

The fourth proportional to 5,269.76, 7,856.61 and 5,135.12 is: 7,655.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,269.76 : 7,856.61 = 5,135.12 : x
  2. Step 2: Convert to fraction form
    5,269.76/7,856.61 = 5,135.12/x
  3. Step 3: Cross multiply
    5,269.76x = 7,856.61 × 5,135.12
  4. Step 4: Simplify right side
    5,269.76x = 40,344,635.14
  5. Step 5: Solve for x
    x = 40,344,635.14/5,269.76
  6. Step 6: Final answer
    x = 7,655.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.