Home / 3,479.20-4,801.34-1,987.32

Finding the Fourth Proportional to 3,479.20, 4,801.34 and 1,987.32

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Solution

The fourth proportional to 3,479.20, 4,801.34 and 1,987.32 is: 2,742.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.20 : 4,801.34 = 1,987.32 : x
  2. Step 2: Convert to fraction form
    3,479.20/4,801.34 = 1,987.32/x
  3. Step 3: Cross multiply
    3,479.20x = 4,801.34 × 1,987.32
  4. Step 4: Simplify right side
    3,479.20x = 9,541,765.07
  5. Step 5: Solve for x
    x = 9,541,765.07/3,479.20
  6. Step 6: Final answer
    x = 2,742.52

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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.