Home / 3,036.88-4,184.82-1,987.12

Finding the Fourth Proportional to 3,036.88, 4,184.82 and 1,987.12

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Solution

The fourth proportional to 3,036.88, 4,184.82 and 1,987.12 is: 2,738.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,036.88 : 4,184.82 = 1,987.12 : x
  2. Step 2: Convert to fraction form
    3,036.88/4,184.82 = 1,987.12/x
  3. Step 3: Cross multiply
    3,036.88x = 4,184.82 × 1,987.12
  4. Step 4: Simplify right side
    3,036.88x = 8,315,739.52
  5. Step 5: Solve for x
    x = 8,315,739.52/3,036.88
  6. Step 6: Final answer
    x = 2,738.25

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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.