Home / 3,245.83-4,479.58-1,987.72

Finding the Fourth Proportional to 3,245.83, 4,479.58 and 1,987.72

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Solution

The fourth proportional to 3,245.83, 4,479.58 and 1,987.72 is: 2,743.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,245.83 : 4,479.58 = 1,987.72 : x
  2. Step 2: Convert to fraction form
    3,245.83/4,479.58 = 1,987.72/x
  3. Step 3: Cross multiply
    3,245.83x = 4,479.58 × 1,987.72
  4. Step 4: Simplify right side
    3,245.83x = 8,904,150.76
  5. Step 5: Solve for x
    x = 8,904,150.76/3,245.83
  6. Step 6: Final answer
    x = 2,743.26

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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.