Home / 7,218.30-9,960.25-4,031.15

Finding the Fourth Proportional to 7,218.30, 9,960.25 and 4,031.15

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Solution

The fourth proportional to 7,218.30, 9,960.25 and 4,031.15 is: 5,562.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.30 : 9,960.25 = 4,031.15 : x
  2. Step 2: Convert to fraction form
    7,218.30/9,960.25 = 4,031.15/x
  3. Step 3: Cross multiply
    7,218.30x = 9,960.25 × 4,031.15
  4. Step 4: Simplify right side
    7,218.30x = 40,151,241.63
  5. Step 5: Solve for x
    x = 40,151,241.63/7,218.30
  6. Step 6: Final answer
    x = 5,562.42

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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.