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Finding the Fourth Proportional to 6,512.77, 8,988.11 and 3,680.47

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Solution

The fourth proportional to 6,512.77, 8,988.11 and 3,680.47 is: 5,079.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,512.77 : 8,988.11 = 3,680.47 : x
  2. Step 2: Convert to fraction form
    6,512.77/8,988.11 = 3,680.47/x
  3. Step 3: Cross multiply
    6,512.77x = 8,988.11 × 3,680.47
  4. Step 4: Simplify right side
    6,512.77x = 33,080,469.21
  5. Step 5: Solve for x
    x = 33,080,469.21/6,512.77
  6. Step 6: Final answer
    x = 5,079.32

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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.