Home / 7,527.40-10,387.78-4,170.76

Finding the Fourth Proportional to 7,527.40, 10,387.78 and 4,170.76

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Solution

The fourth proportional to 7,527.40, 10,387.78 and 4,170.76 is: 5,755.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,527.40 : 10,387.78 = 4,170.76 : x
  2. Step 2: Convert to fraction form
    7,527.40/10,387.78 = 4,170.76/x
  3. Step 3: Cross multiply
    7,527.40x = 10,387.78 × 4,170.76
  4. Step 4: Simplify right side
    7,527.40x = 43,324,937.31
  5. Step 5: Solve for x
    x = 43,324,937.31/7,527.40
  6. Step 6: Final answer
    x = 5,755.63

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Half scale
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Double scale
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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.