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Finding the Fourth Proportional to 8,661.68, 12,963.36 and 5,363.36

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Solution

The fourth proportional to 8,661.68, 12,963.36 and 5,363.36 is: 8,026.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,661.68 : 12,963.36 = 5,363.36 : x
  2. Step 2: Convert to fraction form
    8,661.68/12,963.36 = 5,363.36/x
  3. Step 3: Cross multiply
    8,661.68x = 12,963.36 × 5,363.36
  4. Step 4: Simplify right side
    8,661.68x = 69,527,166.49
  5. Step 5: Solve for x
    x = 69,527,166.49/8,661.68
  6. Step 6: Final answer
    x = 8,026.98

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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.