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Finding the Fourth Proportional to 7,387.89, 10,195.02 and 4,201.11

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Solution

The fourth proportional to 7,387.89, 10,195.02 and 4,201.11 is: 5,797.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,387.89 : 10,195.02 = 4,201.11 : x
  2. Step 2: Convert to fraction form
    7,387.89/10,195.02 = 4,201.11/x
  3. Step 3: Cross multiply
    7,387.89x = 10,195.02 × 4,201.11
  4. Step 4: Simplify right side
    7,387.89x = 42,830,400.47
  5. Step 5: Solve for x
    x = 42,830,400.47/7,387.89
  6. Step 6: Final answer
    x = 5,797.38

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Half scale
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Double scale
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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.