Home / 2,811.12-3,879.08-1,569.04

Finding the Fourth Proportional to 2,811.12, 3,879.08 and 1,569.04

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Solution

The fourth proportional to 2,811.12, 3,879.08 and 1,569.04 is: 2,165.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.12 : 3,879.08 = 1,569.04 : x
  2. Step 2: Convert to fraction form
    2,811.12/3,879.08 = 1,569.04/x
  3. Step 3: Cross multiply
    2,811.12x = 3,879.08 × 1,569.04
  4. Step 4: Simplify right side
    2,811.12x = 6,086,431.68
  5. Step 5: Solve for x
    x = 6,086,431.68/2,811.12
  6. Step 6: Final answer
    x = 2,165.13

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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.