Home / 3,987.56-5,502.66-2,219.18

Finding the Fourth Proportional to 3,987.56, 5,502.66 and 2,219.18

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Solution

The fourth proportional to 3,987.56, 5,502.66 and 2,219.18 is: 3,062.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.56 : 5,502.66 = 2,219.18 : x
  2. Step 2: Convert to fraction form
    3,987.56/5,502.66 = 2,219.18/x
  3. Step 3: Cross multiply
    3,987.56x = 5,502.66 × 2,219.18
  4. Step 4: Simplify right side
    3,987.56x = 12,211,393.02
  5. Step 5: Solve for x
    x = 12,211,393.02/3,987.56
  6. Step 6: Final answer
    x = 3,062.37

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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.