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Finding the Fourth Proportional to 8,959.06, 13,438.62 and 2,719.13

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Solution

The fourth proportional to 8,959.06, 13,438.62 and 2,719.13 is: 4,078.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.06 : 13,438.62 = 2,719.13 : x
  2. Step 2: Convert to fraction form
    8,959.06/13,438.62 = 2,719.13/x
  3. Step 3: Cross multiply
    8,959.06x = 13,438.62 × 2,719.13
  4. Step 4: Simplify right side
    8,959.06x = 36,541,274.01
  5. Step 5: Solve for x
    x = 36,541,274.01/8,959.06
  6. Step 6: Final answer
    x = 4,078.70

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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.