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Finding the Fourth Proportional to 8,892.92, 12,271.90 and 4,913.95

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Solution

The fourth proportional to 8,892.92, 12,271.90 and 4,913.95 is: 6,781.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,892.92 : 12,271.90 = 4,913.95 : x
  2. Step 2: Convert to fraction form
    8,892.92/12,271.90 = 4,913.95/x
  3. Step 3: Cross multiply
    8,892.92x = 12,271.90 × 4,913.95
  4. Step 4: Simplify right side
    8,892.92x = 60,303,503.01
  5. Step 5: Solve for x
    x = 60,303,503.01/8,892.92
  6. Step 6: Final answer
    x = 6,781.07

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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.