Home / 2,581.20-3,869.85-1,283.58

Finding the Fourth Proportional to 2,581.20, 3,869.85 and 1,283.58

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Solution

The fourth proportional to 2,581.20, 3,869.85 and 1,283.58 is: 1,924.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.20 : 3,869.85 = 1,283.58 : x
  2. Step 2: Convert to fraction form
    2,581.20/3,869.85 = 1,283.58/x
  3. Step 3: Cross multiply
    2,581.20x = 3,869.85 × 1,283.58
  4. Step 4: Simplify right side
    2,581.20x = 4,967,262.06
  5. Step 5: Solve for x
    x = 4,967,262.06/2,581.20
  6. Step 6: Final answer
    x = 1,924.40

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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.