Home / 3,247.31-4,480.05-1,987.35

Finding the Fourth Proportional to 3,247.31, 4,480.05 and 1,987.35

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Solution

The fourth proportional to 3,247.31, 4,480.05 and 1,987.35 is: 2,741.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,247.31 : 4,480.05 = 1,987.35 : x
  2. Step 2: Convert to fraction form
    3,247.31/4,480.05 = 1,987.35/x
  3. Step 3: Cross multiply
    3,247.31x = 4,480.05 × 1,987.35
  4. Step 4: Simplify right side
    3,247.31x = 8,903,427.37
  5. Step 5: Solve for x
    x = 8,903,427.37/3,247.31
  6. Step 6: Final answer
    x = 2,741.79

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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.