Home / 8,755.28-12,081.81-4,977.92

Finding the Fourth Proportional to 8,755.28, 12,081.81 and 4,977.92

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Solution

The fourth proportional to 8,755.28, 12,081.81 and 4,977.92 is: 6,869.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.28 : 12,081.81 = 4,977.92 : x
  2. Step 2: Convert to fraction form
    8,755.28/12,081.81 = 4,977.92/x
  3. Step 3: Cross multiply
    8,755.28x = 12,081.81 × 4,977.92
  4. Step 4: Simplify right side
    8,755.28x = 60,142,259.20
  5. Step 5: Solve for x
    x = 60,142,259.20/8,755.28
  6. Step 6: Final answer
    x = 6,869.26

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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.