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Finding the Fourth Proportional to 8,461.71, 12,693.33 and 2,221.74

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Solution

The fourth proportional to 8,461.71, 12,693.33 and 2,221.74 is: 3,332.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,461.71 : 12,693.33 = 2,221.74 : x
  2. Step 2: Convert to fraction form
    8,461.71/12,693.33 = 2,221.74/x
  3. Step 3: Cross multiply
    8,461.71x = 12,693.33 × 2,221.74
  4. Step 4: Simplify right side
    8,461.71x = 28,201,278.99
  5. Step 5: Solve for x
    x = 28,201,278.99/8,461.71
  6. Step 6: Final answer
    x = 3,332.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.