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Finding the Fourth Proportional to 8,972.91, 12,382.35 and 4,993.93

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Solution

The fourth proportional to 8,972.91, 12,382.35 and 4,993.93 is: 6,891.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.91 : 12,382.35 = 4,993.93 : x
  2. Step 2: Convert to fraction form
    8,972.91/12,382.35 = 4,993.93/x
  3. Step 3: Cross multiply
    8,972.91x = 12,382.35 × 4,993.93
  4. Step 4: Simplify right side
    8,972.91x = 61,836,585.89
  5. Step 5: Solve for x
    x = 61,836,585.89/8,972.91
  6. Step 6: Final answer
    x = 6,891.48

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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.