Home / 3,138.85-4,336.13-2,508.57

Finding the Fourth Proportional to 3,138.85, 4,336.13 and 2,508.57

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Solution

The fourth proportional to 3,138.85, 4,336.13 and 2,508.57 is: 3,465.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.85 : 4,336.13 = 2,508.57 : x
  2. Step 2: Convert to fraction form
    3,138.85/4,336.13 = 2,508.57/x
  3. Step 3: Cross multiply
    3,138.85x = 4,336.13 × 2,508.57
  4. Step 4: Simplify right side
    3,138.85x = 10,877,491.91
  5. Step 5: Solve for x
    x = 10,877,491.91/3,138.85
  6. Step 6: Final answer
    x = 3,465.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.