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Finding the Fourth Proportional to 8,758.36, 13,049.03 and 8,340.40

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Solution

The fourth proportional to 8,758.36, 13,049.03 and 8,340.40 is: 12,426.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.36 : 13,049.03 = 8,340.40 : x
  2. Step 2: Convert to fraction form
    8,758.36/13,049.03 = 8,340.40/x
  3. Step 3: Cross multiply
    8,758.36x = 13,049.03 × 8,340.40
  4. Step 4: Simplify right side
    8,758.36x = 108,834,129.81
  5. Step 5: Solve for x
    x = 108,834,129.81/8,758.36
  6. Step 6: Final answer
    x = 12,426.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.