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Finding the Fourth Proportional to 8,901.63, 12,300.66 and 8,613.27

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Solution

The fourth proportional to 8,901.63, 12,300.66 and 8,613.27 is: 11,902.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,901.63 : 12,300.66 = 8,613.27 : x
  2. Step 2: Convert to fraction form
    8,901.63/12,300.66 = 8,613.27/x
  3. Step 3: Cross multiply
    8,901.63x = 12,300.66 × 8,613.27
  4. Step 4: Simplify right side
    8,901.63x = 105,948,905.76
  5. Step 5: Solve for x
    x = 105,948,905.76/8,901.63
  6. Step 6: Final answer
    x = 11,902.19

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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.