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Finding the Fourth Proportional to 6,612.64, 9,899.52 and 3,686.92

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Solution

The fourth proportional to 6,612.64, 9,899.52 and 3,686.92 is: 5,519.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,612.64 : 9,899.52 = 3,686.92 : x
  2. Step 2: Convert to fraction form
    6,612.64/9,899.52 = 3,686.92/x
  3. Step 3: Cross multiply
    6,612.64x = 9,899.52 × 3,686.92
  4. Step 4: Simplify right side
    6,612.64x = 36,498,738.28
  5. Step 5: Solve for x
    x = 36,498,738.28/6,612.64
  6. Step 6: Final answer
    x = 5,519.54

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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.