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Finding the Fourth Proportional to 7,002.60, 9,663.48 and 3,858.90

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Solution

The fourth proportional to 7,002.60, 9,663.48 and 3,858.90 is: 5,325.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,002.60 : 9,663.48 = 3,858.90 : x
  2. Step 2: Convert to fraction form
    7,002.60/9,663.48 = 3,858.90/x
  3. Step 3: Cross multiply
    7,002.60x = 9,663.48 × 3,858.90
  4. Step 4: Simplify right side
    7,002.60x = 37,290,402.97
  5. Step 5: Solve for x
    x = 37,290,402.97/7,002.60
  6. Step 6: Final answer
    x = 5,325.22

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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.