Home / 7,520.38-10,378.25-4,117.68

Finding the Fourth Proportional to 7,520.38, 10,378.25 and 4,117.68

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Solution

The fourth proportional to 7,520.38, 10,378.25 and 4,117.68 is: 5,682.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,520.38 : 10,378.25 = 4,117.68 : x
  2. Step 2: Convert to fraction form
    7,520.38/10,378.25 = 4,117.68/x
  3. Step 3: Cross multiply
    7,520.38x = 10,378.25 × 4,117.68
  4. Step 4: Simplify right side
    7,520.38x = 42,734,322.75
  5. Step 5: Solve for x
    x = 42,734,322.75/7,520.38
  6. Step 6: Final answer
    x = 5,682.47

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Half scale
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Double scale
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Similar ratio
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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.