Home / 3,149.12-4,345.16-2,678.91

Finding the Fourth Proportional to 3,149.12, 4,345.16 and 2,678.91

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Solution

The fourth proportional to 3,149.12, 4,345.16 and 2,678.91 is: 3,696.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,149.12 : 4,345.16 = 2,678.91 : x
  2. Step 2: Convert to fraction form
    3,149.12/4,345.16 = 2,678.91/x
  3. Step 3: Cross multiply
    3,149.12x = 4,345.16 × 2,678.91
  4. Step 4: Simplify right side
    3,149.12x = 11,640,279.18
  5. Step 5: Solve for x
    x = 11,640,279.18/3,149.12
  6. Step 6: Final answer
    x = 3,696.37

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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.