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Finding the Fourth Proportional to 8,393.71, 12,616.71 and 5,293.64

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Solution

The fourth proportional to 8,393.71, 12,616.71 and 5,293.64 is: 7,956.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,393.71 : 12,616.71 = 5,293.64 : x
  2. Step 2: Convert to fraction form
    8,393.71/12,616.71 = 5,293.64/x
  3. Step 3: Cross multiply
    8,393.71x = 12,616.71 × 5,293.64
  4. Step 4: Simplify right side
    8,393.71x = 66,788,291.22
  5. Step 5: Solve for x
    x = 66,788,291.22/8,393.71
  6. Step 6: Final answer
    x = 7,956.95

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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.