Home / 3,081.12-4,618.24-1,987.52

Finding the Fourth Proportional to 3,081.12, 4,618.24 and 1,987.52

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Solution

The fourth proportional to 3,081.12, 4,618.24 and 1,987.52 is: 2,979.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.12 : 4,618.24 = 1,987.52 : x
  2. Step 2: Convert to fraction form
    3,081.12/4,618.24 = 1,987.52/x
  3. Step 3: Cross multiply
    3,081.12x = 4,618.24 × 1,987.52
  4. Step 4: Simplify right side
    3,081.12x = 9,178,844.36
  5. Step 5: Solve for x
    x = 9,178,844.36/3,081.12
  6. Step 6: Final answer
    x = 2,979.06

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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.