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Finding the Fourth Proportional to 8,805.70, 12,155.18 and 5,825.61

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Solution

The fourth proportional to 8,805.70, 12,155.18 and 5,825.61 is: 8,041.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,805.70 : 12,155.18 = 5,825.61 : x
  2. Step 2: Convert to fraction form
    8,805.70/12,155.18 = 5,825.61/x
  3. Step 3: Cross multiply
    8,805.70x = 12,155.18 × 5,825.61
  4. Step 4: Simplify right side
    8,805.70x = 70,811,338.16
  5. Step 5: Solve for x
    x = 70,811,338.16/8,805.70
  6. Step 6: Final answer
    x = 8,041.53

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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.