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Finding the Fourth Proportional to 6,987.60, 9,641.16 and 4,002.48

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Solution

The fourth proportional to 6,987.60, 9,641.16 and 4,002.48 is: 5,522.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.60 : 9,641.16 = 4,002.48 : x
  2. Step 2: Convert to fraction form
    6,987.60/9,641.16 = 4,002.48/x
  3. Step 3: Cross multiply
    6,987.60x = 9,641.16 × 4,002.48
  4. Step 4: Simplify right side
    6,987.60x = 38,588,550.08
  5. Step 5: Solve for x
    x = 38,588,550.08/6,987.60
  6. Step 6: Final answer
    x = 5,522.43

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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.