Home / 2,581.76-3,869.94-1,263.70

Finding the Fourth Proportional to 2,581.76, 3,869.94 and 1,263.70

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Solution

The fourth proportional to 2,581.76, 3,869.94 and 1,263.70 is: 1,894.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.76 : 3,869.94 = 1,263.70 : x
  2. Step 2: Convert to fraction form
    2,581.76/3,869.94 = 1,263.70/x
  3. Step 3: Cross multiply
    2,581.76x = 3,869.94 × 1,263.70
  4. Step 4: Simplify right side
    2,581.76x = 4,890,428.76
  5. Step 5: Solve for x
    x = 4,890,428.76/2,581.76
  6. Step 6: Final answer
    x = 1,894.22

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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.