Home / 7,789.28-10,748.75-4,251.78

Finding the Fourth Proportional to 7,789.28, 10,748.75 and 4,251.78

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Solution

The fourth proportional to 7,789.28, 10,748.75 and 4,251.78 is: 5,867.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.28 : 10,748.75 = 4,251.78 : x
  2. Step 2: Convert to fraction form
    7,789.28/10,748.75 = 4,251.78/x
  3. Step 3: Cross multiply
    7,789.28x = 10,748.75 × 4,251.78
  4. Step 4: Simplify right side
    7,789.28x = 45,701,320.28
  5. Step 5: Solve for x
    x = 45,701,320.28/7,789.28
  6. Step 6: Final answer
    x = 5,867.21

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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.