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Finding the Fourth Proportional to 8,916.68, 12,303.50 and 5,560.55

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Solution

The fourth proportional to 8,916.68, 12,303.50 and 5,560.55 is: 7,672.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,916.68 : 12,303.50 = 5,560.55 : x
  2. Step 2: Convert to fraction form
    8,916.68/12,303.50 = 5,560.55/x
  3. Step 3: Cross multiply
    8,916.68x = 12,303.50 × 5,560.55
  4. Step 4: Simplify right side
    8,916.68x = 68,414,183.74
  5. Step 5: Solve for x
    x = 68,414,183.74/8,916.68
  6. Step 6: Final answer
    x = 7,672.61

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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.