Home / 8,660.91-12,983.57-3,112.95

Finding the Fourth Proportional to 8,660.91, 12,983.57 and 3,112.95

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Solution

The fourth proportional to 8,660.91, 12,983.57 and 3,112.95 is: 4,666.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660.91 : 12,983.57 = 3,112.95 : x
  2. Step 2: Convert to fraction form
    8,660.91/12,983.57 = 3,112.95/x
  3. Step 3: Cross multiply
    8,660.91x = 12,983.57 × 3,112.95
  4. Step 4: Simplify right side
    8,660.91x = 40,417,204.23
  5. Step 5: Solve for x
    x = 40,417,204.23/8,660.91
  6. Step 6: Final answer
    x = 4,666.62

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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.