Home / 2,589.18-3,863.86-2,312.38

Finding the Fourth Proportional to 2,589.18, 3,863.86 and 2,312.38

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Solution

The fourth proportional to 2,589.18, 3,863.86 and 2,312.38 is: 3,450.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,589.18 : 3,863.86 = 2,312.38 : x
  2. Step 2: Convert to fraction form
    2,589.18/3,863.86 = 2,312.38/x
  3. Step 3: Cross multiply
    2,589.18x = 3,863.86 × 2,312.38
  4. Step 4: Simplify right side
    2,589.18x = 8,934,712.59
  5. Step 5: Solve for x
    x = 8,934,712.59/2,589.18
  6. Step 6: Final answer
    x = 3,450.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.