Home / 2,763.60-4,147.83-1,120.11

Finding the Fourth Proportional to 2,763.60, 4,147.83 and 1,120.11

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Solution

The fourth proportional to 2,763.60, 4,147.83 and 1,120.11 is: 1,681.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,763.60 : 4,147.83 = 1,120.11 : x
  2. Step 2: Convert to fraction form
    2,763.60/4,147.83 = 1,120.11/x
  3. Step 3: Cross multiply
    2,763.60x = 4,147.83 × 1,120.11
  4. Step 4: Simplify right side
    2,763.60x = 4,646,025.86
  5. Step 5: Solve for x
    x = 4,646,025.86/2,763.60
  6. Step 6: Final answer
    x = 1,681.15

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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.