Home / 4,120.71-6,181.11-1,159.18

Finding the Fourth Proportional to 4,120.71, 6,181.11 and 1,159.18

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Solution

The fourth proportional to 4,120.71, 6,181.11 and 1,159.18 is: 1,738.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.71 : 6,181.11 = 1,159.18 : x
  2. Step 2: Convert to fraction form
    4,120.71/6,181.11 = 1,159.18/x
  3. Step 3: Cross multiply
    4,120.71x = 6,181.11 × 1,159.18
  4. Step 4: Simplify right side
    4,120.71x = 7,165,003.64
  5. Step 5: Solve for x
    x = 7,165,003.64/4,120.71
  6. Step 6: Final answer
    x = 1,738.78

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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.