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Finding the Fourth Proportional to 6,443.66, 8,891.16 and 3,924.92

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Solution

The fourth proportional to 6,443.66, 8,891.16 and 3,924.92 is: 5,415.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,443.66 : 8,891.16 = 3,924.92 : x
  2. Step 2: Convert to fraction form
    6,443.66/8,891.16 = 3,924.92/x
  3. Step 3: Cross multiply
    6,443.66x = 8,891.16 × 3,924.92
  4. Step 4: Simplify right side
    6,443.66x = 34,897,091.71
  5. Step 5: Solve for x
    x = 34,897,091.71/6,443.66
  6. Step 6: Final answer
    x = 5,415.73

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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.