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Finding the Fourth Proportional to 8,869.70, 12,240.02 and 4,891.19

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Solution

The fourth proportional to 8,869.70, 12,240.02 and 4,891.19 is: 6,749.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,869.70 : 12,240.02 = 4,891.19 : x
  2. Step 2: Convert to fraction form
    8,869.70/12,240.02 = 4,891.19/x
  3. Step 3: Cross multiply
    8,869.70x = 12,240.02 × 4,891.19
  4. Step 4: Simplify right side
    8,869.70x = 59,868,214.45
  5. Step 5: Solve for x
    x = 59,868,214.45/8,869.70
  6. Step 6: Final answer
    x = 6,749.74

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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.