Home / 8,581.70-12,869.28-2,957.75

Finding the Fourth Proportional to 8,581.70, 12,869.28 and 2,957.75

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Solution

The fourth proportional to 8,581.70, 12,869.28 and 2,957.75 is: 4,435.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,581.70 : 12,869.28 = 2,957.75 : x
  2. Step 2: Convert to fraction form
    8,581.70/12,869.28 = 2,957.75/x
  3. Step 3: Cross multiply
    8,581.70x = 12,869.28 × 2,957.75
  4. Step 4: Simplify right side
    8,581.70x = 38,064,112.92
  5. Step 5: Solve for x
    x = 38,064,112.92/8,581.70
  6. Step 6: Final answer
    x = 4,435.50

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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.