Home / 8,114.28-12,155.64-5,332.58

Finding the Fourth Proportional to 8,114.28, 12,155.64 and 5,332.58

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Solution

The fourth proportional to 8,114.28, 12,155.64 and 5,332.58 is: 7,988.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,114.28 : 12,155.64 = 5,332.58 : x
  2. Step 2: Convert to fraction form
    8,114.28/12,155.64 = 5,332.58/x
  3. Step 3: Cross multiply
    8,114.28x = 12,155.64 × 5,332.58
  4. Step 4: Simplify right side
    8,114.28x = 64,820,861.97
  5. Step 5: Solve for x
    x = 64,820,861.97/8,114.28
  6. Step 6: Final answer
    x = 7,988.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.