Home / 3,987.57-5,502.69-2,219.22

Finding the Fourth Proportional to 3,987.57, 5,502.69 and 2,219.22

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Solution

The fourth proportional to 3,987.57, 5,502.69 and 2,219.22 is: 3,062.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.57 : 5,502.69 = 2,219.22 : x
  2. Step 2: Convert to fraction form
    3,987.57/5,502.69 = 2,219.22/x
  3. Step 3: Cross multiply
    3,987.57x = 5,502.69 × 2,219.22
  4. Step 4: Simplify right side
    3,987.57x = 12,211,679.70
  5. Step 5: Solve for x
    x = 12,211,679.70/3,987.57
  6. Step 6: Final answer
    x = 3,062.44

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Double scale
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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.