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Finding the Fourth Proportional to 2,581, 3,866.04 and 1,279.76

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Solution

The fourth proportional to 2,581, 3,866.04 and 1,279.76 is: 1,916.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581 : 3,866.04 = 1,279.76 : x
  2. Step 2: Convert to fraction form
    2,581/3,866.04 = 1,279.76/x
  3. Step 3: Cross multiply
    2,581x = 3,866.04 × 1,279.76
  4. Step 4: Simplify right side
    2,581x = 4,947,603.35
  5. Step 5: Solve for x
    x = 4,947,603.35/2,581
  6. Step 6: Final answer
    x = 1,916.93

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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.