Home / 3,560.20-4,912.80-1,988.32

Finding the Fourth Proportional to 3,560.20, 4,912.80 and 1,988.32

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Solution

The fourth proportional to 3,560.20, 4,912.80 and 1,988.32 is: 2,743.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,560.20 : 4,912.80 = 1,988.32 : x
  2. Step 2: Convert to fraction form
    3,560.20/4,912.80 = 1,988.32/x
  3. Step 3: Cross multiply
    3,560.20x = 4,912.80 × 1,988.32
  4. Step 4: Simplify right side
    3,560.20x = 9,768,218.50
  5. Step 5: Solve for x
    x = 9,768,218.50/3,560.20
  6. Step 6: Final answer
    x = 2,743.73

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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.