Home / 3,372.48-5,055.84-1,987.20

Finding the Fourth Proportional to 3,372.48, 5,055.84 and 1,987.20

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Solution

The fourth proportional to 3,372.48, 5,055.84 and 1,987.20 is: 2,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,372.48 : 5,055.84 = 1,987.20 : x
  2. Step 2: Convert to fraction form
    3,372.48/5,055.84 = 1,987.20/x
  3. Step 3: Cross multiply
    3,372.48x = 5,055.84 × 1,987.20
  4. Step 4: Simplify right side
    3,372.48x = 10,046,965.25
  5. Step 5: Solve for x
    x = 10,046,965.25/3,372.48
  6. Step 6: Final answer
    x = 2,979.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.