Home / 3,578.20-4,937.88-1,984.96

Finding the Fourth Proportional to 3,578.20, 4,937.88 and 1,984.96

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Solution

The fourth proportional to 3,578.20, 4,937.88 and 1,984.96 is: 2,739.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.20 : 4,937.88 = 1,984.96 : x
  2. Step 2: Convert to fraction form
    3,578.20/4,937.88 = 1,984.96/x
  3. Step 3: Cross multiply
    3,578.20x = 4,937.88 × 1,984.96
  4. Step 4: Simplify right side
    3,578.20x = 9,801,494.28
  5. Step 5: Solve for x
    x = 9,801,494.28/3,578.20
  6. Step 6: Final answer
    x = 2,739.22

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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.