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Finding the Fourth Proportional to 7,398.59, 11,101.13 and 3,887.78

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Solution

The fourth proportional to 7,398.59, 11,101.13 and 3,887.78 is: 5,833.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,398.59 : 11,101.13 = 3,887.78 : x
  2. Step 2: Convert to fraction form
    7,398.59/11,101.13 = 3,887.78/x
  3. Step 3: Cross multiply
    7,398.59x = 11,101.13 × 3,887.78
  4. Step 4: Simplify right side
    7,398.59x = 43,158,676.25
  5. Step 5: Solve for x
    x = 43,158,676.25/7,398.59
  6. Step 6: Final answer
    x = 5,833.37

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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.