Home / 3,708.65-5,117.45-2,115.52

Finding the Fourth Proportional to 3,708.65, 5,117.45 and 2,115.52

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Solution

The fourth proportional to 3,708.65, 5,117.45 and 2,115.52 is: 2,919.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,708.65 : 5,117.45 = 2,115.52 : x
  2. Step 2: Convert to fraction form
    3,708.65/5,117.45 = 2,115.52/x
  3. Step 3: Cross multiply
    3,708.65x = 5,117.45 × 2,115.52
  4. Step 4: Simplify right side
    3,708.65x = 10,826,044.45
  5. Step 5: Solve for x
    x = 10,826,044.45/3,708.65
  6. Step 6: Final answer
    x = 2,919.13

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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.