Home / 3,225.20-4,837.80-1,988.60

Finding the Fourth Proportional to 3,225.20, 4,837.80 and 1,988.60

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Solution

The fourth proportional to 3,225.20, 4,837.80 and 1,988.60 is: 2,982.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,225.20 : 4,837.80 = 1,988.60 : x
  2. Step 2: Convert to fraction form
    3,225.20/4,837.80 = 1,988.60/x
  3. Step 3: Cross multiply
    3,225.20x = 4,837.80 × 1,988.60
  4. Step 4: Simplify right side
    3,225.20x = 9,620,449.08
  5. Step 5: Solve for x
    x = 9,620,449.08/3,225.20
  6. Step 6: Final answer
    x = 2,982.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.