Home / 2,581.45-3,870.99-1,411.85

Finding the Fourth Proportional to 2,581.45, 3,870.99 and 1,411.85

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Solution

The fourth proportional to 2,581.45, 3,870.99 and 1,411.85 is: 2,117.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.45 : 3,870.99 = 1,411.85 : x
  2. Step 2: Convert to fraction form
    2,581.45/3,870.99 = 1,411.85/x
  3. Step 3: Cross multiply
    2,581.45x = 3,870.99 × 1,411.85
  4. Step 4: Simplify right side
    2,581.45x = 5,465,266.91
  5. Step 5: Solve for x
    x = 5,465,266.91/2,581.45
  6. Step 6: Final answer
    x = 2,117.13

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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.