Home / 4,220.13-6,330.20-1,142.13

Finding the Fourth Proportional to 4,220.13, 6,330.20 and 1,142.13

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Solution

The fourth proportional to 4,220.13, 6,330.20 and 1,142.13 is: 1,713.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,220.13 : 6,330.20 = 1,142.13 : x
  2. Step 2: Convert to fraction form
    4,220.13/6,330.20 = 1,142.13/x
  3. Step 3: Cross multiply
    4,220.13x = 6,330.20 × 1,142.13
  4. Step 4: Simplify right side
    4,220.13x = 7,229,911.33
  5. Step 5: Solve for x
    x = 7,229,911.33/4,220.13
  6. Step 6: Final answer
    x = 1,713.20

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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.