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Finding the Fourth Proportional to 8,870.63, 12,241.46 and 4,891.76

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Solution

The fourth proportional to 8,870.63, 12,241.46 and 4,891.76 is: 6,750.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,870.63 : 12,241.46 = 4,891.76 : x
  2. Step 2: Convert to fraction form
    8,870.63/12,241.46 = 4,891.76/x
  3. Step 3: Cross multiply
    8,870.63x = 12,241.46 × 4,891.76
  4. Step 4: Simplify right side
    8,870.63x = 59,882,198.70
  5. Step 5: Solve for x
    x = 59,882,198.70/8,870.63
  6. Step 6: Final answer
    x = 6,750.62

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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.