Home / 2,102.49-3,152.66-1,129.77

Finding the Fourth Proportional to 2,102.49, 3,152.66 and 1,129.77

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Solution

The fourth proportional to 2,102.49, 3,152.66 and 1,129.77 is: 1,694.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,102.49 : 3,152.66 = 1,129.77 : x
  2. Step 2: Convert to fraction form
    2,102.49/3,152.66 = 1,129.77/x
  3. Step 3: Cross multiply
    2,102.49x = 3,152.66 × 1,129.77
  4. Step 4: Simplify right side
    2,102.49x = 3,561,775.04
  5. Step 5: Solve for x
    x = 3,561,775.04/2,102.49
  6. Step 6: Final answer
    x = 1,694.07

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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.