Home / 4,220.59-6,330.89-1,142.59

Finding the Fourth Proportional to 4,220.59, 6,330.89 and 1,142.59

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Solution

The fourth proportional to 4,220.59, 6,330.89 and 1,142.59 is: 1,713.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,220.59 : 6,330.89 = 1,142.59 : x
  2. Step 2: Convert to fraction form
    4,220.59/6,330.89 = 1,142.59/x
  3. Step 3: Cross multiply
    4,220.59x = 6,330.89 × 1,142.59
  4. Step 4: Simplify right side
    4,220.59x = 7,233,611.61
  5. Step 5: Solve for x
    x = 7,233,611.61/4,220.59
  6. Step 6: Final answer
    x = 1,713.89

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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.