Home / 2,013.68-2,778.87-1,129.49

Finding the Fourth Proportional to 2,013.68, 2,778.87 and 1,129.49

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Solution

The fourth proportional to 2,013.68, 2,778.87 and 1,129.49 is: 1,558.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,013.68 : 2,778.87 = 1,129.49 : x
  2. Step 2: Convert to fraction form
    2,013.68/2,778.87 = 1,129.49/x
  3. Step 3: Cross multiply
    2,013.68x = 2,778.87 × 1,129.49
  4. Step 4: Simplify right side
    2,013.68x = 3,138,691.98
  5. Step 5: Solve for x
    x = 3,138,691.98/2,013.68
  6. Step 6: Final answer
    x = 1,558.68

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1.5x scale

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.