Home / 3,613.56-4,987.76-2,121.54

Finding the Fourth Proportional to 3,613.56, 4,987.76 and 2,121.54

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Solution

The fourth proportional to 3,613.56, 4,987.76 and 2,121.54 is: 2,928.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.56 : 4,987.76 = 2,121.54 : x
  2. Step 2: Convert to fraction form
    3,613.56/4,987.76 = 2,121.54/x
  3. Step 3: Cross multiply
    3,613.56x = 4,987.76 × 2,121.54
  4. Step 4: Simplify right side
    3,613.56x = 10,581,721.74
  5. Step 5: Solve for x
    x = 10,581,721.74/3,613.56
  6. Step 6: Final answer
    x = 2,928.34

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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.