Home / 1,812.12-2,499.66-1,113

Finding the Fourth Proportional to 1,812.12, 2,499.66 and 1,113

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Solution

The fourth proportional to 1,812.12, 2,499.66 and 1,113 is: 1,535.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.12 : 2,499.66 = 1,113 : x
  2. Step 2: Convert to fraction form
    1,812.12/2,499.66 = 1,113/x
  3. Step 3: Cross multiply
    1,812.12x = 2,499.66 × 1,113
  4. Step 4: Simplify right side
    1,812.12x = 2,782,121.58
  5. Step 5: Solve for x
    x = 2,782,121.58/1,812.12
  6. Step 6: Final answer
    x = 1,535.29

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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.