Home / 3,987.70-5,498.01-3,427.06

Finding the Fourth Proportional to 3,987.70, 5,498.01 and 3,427.06

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Solution

The fourth proportional to 3,987.70, 5,498.01 and 3,427.06 is: 4,725.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.70 : 5,498.01 = 3,427.06 : x
  2. Step 2: Convert to fraction form
    3,987.70/5,498.01 = 3,427.06/x
  3. Step 3: Cross multiply
    3,987.70x = 5,498.01 × 3,427.06
  4. Step 4: Simplify right side
    3,987.70x = 18,842,010.15
  5. Step 5: Solve for x
    x = 18,842,010.15/3,987.70
  6. Step 6: Final answer
    x = 4,725.03

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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.