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Finding the Fourth Proportional to 5,201.78, 7,799.52 and 2,387.07

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Solution

The fourth proportional to 5,201.78, 7,799.52 and 2,387.07 is: 3,579.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,201.78 : 7,799.52 = 2,387.07 : x
  2. Step 2: Convert to fraction form
    5,201.78/7,799.52 = 2,387.07/x
  3. Step 3: Cross multiply
    5,201.78x = 7,799.52 × 2,387.07
  4. Step 4: Simplify right side
    5,201.78x = 18,618,000.21
  5. Step 5: Solve for x
    x = 18,618,000.21/5,201.78
  6. Step 6: Final answer
    x = 3,579.16

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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.