Home / 7,428.30-11,142.45-5,556.13

Finding the Fourth Proportional to 7,428.30, 11,142.45 and 5,556.13

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Solution

The fourth proportional to 7,428.30, 11,142.45 and 5,556.13 is: 8,334.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.30 : 11,142.45 = 5,556.13 : x
  2. Step 2: Convert to fraction form
    7,428.30/11,142.45 = 5,556.13/x
  3. Step 3: Cross multiply
    7,428.30x = 11,142.45 × 5,556.13
  4. Step 4: Simplify right side
    7,428.30x = 61,908,872.86
  5. Step 5: Solve for x
    x = 61,908,872.86/7,428.30
  6. Step 6: Final answer
    x = 8,334.20

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.