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Finding the Fourth Proportional to 7,249.80, 10,007.10 and 6,615.48

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Solution

The fourth proportional to 7,249.80, 10,007.10 and 6,615.48 is: 9,131.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,249.80 : 10,007.10 = 6,615.48 : x
  2. Step 2: Convert to fraction form
    7,249.80/10,007.10 = 6,615.48/x
  3. Step 3: Cross multiply
    7,249.80x = 10,007.10 × 6,615.48
  4. Step 4: Simplify right side
    7,249.80x = 66,201,769.91
  5. Step 5: Solve for x
    x = 66,201,769.91/7,249.80
  6. Step 6: Final answer
    x = 9,131.53

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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.