Home / 8,541.40-12,811.56-3,861.76

Finding the Fourth Proportional to 8,541.40, 12,811.56 and 3,861.76

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Solution

The fourth proportional to 8,541.40, 12,811.56 and 3,861.76 is: 5,792.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,541.40 : 12,811.56 = 3,861.76 : x
  2. Step 2: Convert to fraction form
    8,541.40/12,811.56 = 3,861.76/x
  3. Step 3: Cross multiply
    8,541.40x = 12,811.56 × 3,861.76
  4. Step 4: Simplify right side
    8,541.40x = 49,475,169.95
  5. Step 5: Solve for x
    x = 49,475,169.95/8,541.40
  6. Step 6: Final answer
    x = 5,792.40

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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.