Home / 4,200.80-6,301.58-1,281.20

Finding the Fourth Proportional to 4,200.80, 6,301.58 and 1,281.20

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Solution

The fourth proportional to 4,200.80, 6,301.58 and 1,281.20 is: 1,921.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,200.80 : 6,301.58 = 1,281.20 : x
  2. Step 2: Convert to fraction form
    4,200.80/6,301.58 = 1,281.20/x
  3. Step 3: Cross multiply
    4,200.80x = 6,301.58 × 1,281.20
  4. Step 4: Simplify right side
    4,200.80x = 8,073,584.30
  5. Step 5: Solve for x
    x = 8,073,584.30/4,200.80
  6. Step 6: Final answer
    x = 1,921.92

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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.