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Finding the Fourth Proportional to 3,479.32, 4,801.10 and 1,987.08

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Solution

The fourth proportional to 3,479.32, 4,801.10 and 1,987.08 is: 2,741.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.32 : 4,801.10 = 1,987.08 : x
  2. Step 2: Convert to fraction form
    3,479.32/4,801.10 = 1,987.08/x
  3. Step 3: Cross multiply
    3,479.32x = 4,801.10 × 1,987.08
  4. Step 4: Simplify right side
    3,479.32x = 9,540,169.79
  5. Step 5: Solve for x
    x = 9,540,169.79/3,479.32
  6. Step 6: Final answer
    x = 2,741.96

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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.