Home / 4,891.20-7,340.40-3,247.20

Finding the Fourth Proportional to 4,891.20, 7,340.40 and 3,247.20

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Solution

The fourth proportional to 4,891.20, 7,340.40 and 3,247.20 is: 4,873.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,891.20 : 7,340.40 = 3,247.20 : x
  2. Step 2: Convert to fraction form
    4,891.20/7,340.40 = 3,247.20/x
  3. Step 3: Cross multiply
    4,891.20x = 7,340.40 × 3,247.20
  4. Step 4: Simplify right side
    4,891.20x = 23,835,746.88
  5. Step 5: Solve for x
    x = 23,835,746.88/4,891.20
  6. Step 6: Final answer
    x = 4,873.19

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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.