Home / 3,721.08-5,135.16-2,042.65

Finding the Fourth Proportional to 3,721.08, 5,135.16 and 2,042.65

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Solution

The fourth proportional to 3,721.08, 5,135.16 and 2,042.65 is: 2,818.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.08 : 5,135.16 = 2,042.65 : x
  2. Step 2: Convert to fraction form
    3,721.08/5,135.16 = 2,042.65/x
  3. Step 3: Cross multiply
    3,721.08x = 5,135.16 × 2,042.65
  4. Step 4: Simplify right side
    3,721.08x = 10,489,298.68
  5. Step 5: Solve for x
    x = 10,489,298.68/3,721.08
  6. Step 6: Final answer
    x = 2,818.89

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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.