Home / 8,251.28-11,386.68-5,107.76

Finding the Fourth Proportional to 8,251.28, 11,386.68 and 5,107.76

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Solution

The fourth proportional to 8,251.28, 11,386.68 and 5,107.76 is: 7,048.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,251.28 : 11,386.68 = 5,107.76 : x
  2. Step 2: Convert to fraction form
    8,251.28/11,386.68 = 5,107.76/x
  3. Step 3: Cross multiply
    8,251.28x = 11,386.68 × 5,107.76
  4. Step 4: Simplify right side
    8,251.28x = 58,160,428.64
  5. Step 5: Solve for x
    x = 58,160,428.64/8,251.28
  6. Step 6: Final answer
    x = 7,048.66

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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.