Home / 4,085.38-5,640.15-2,690.56

Finding the Fourth Proportional to 4,085.38, 5,640.15 and 2,690.56

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Solution

The fourth proportional to 4,085.38, 5,640.15 and 2,690.56 is: 3,714.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,085.38 : 5,640.15 = 2,690.56 : x
  2. Step 2: Convert to fraction form
    4,085.38/5,640.15 = 2,690.56/x
  3. Step 3: Cross multiply
    4,085.38x = 5,640.15 × 2,690.56
  4. Step 4: Simplify right side
    4,085.38x = 15,175,161.98
  5. Step 5: Solve for x
    x = 15,175,161.98/4,085.38
  6. Step 6: Final answer
    x = 3,714.50

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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.