Home / 2,039.92-2,815-1,155.74

Finding the Fourth Proportional to 2,039.92, 2,815 and 1,155.74

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Solution

The fourth proportional to 2,039.92, 2,815 and 1,155.74 is: 1,594.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,039.92 : 2,815 = 1,155.74 : x
  2. Step 2: Convert to fraction form
    2,039.92/2,815 = 1,155.74/x
  3. Step 3: Cross multiply
    2,039.92x = 2,815 × 1,155.74
  4. Step 4: Simplify right side
    2,039.92x = 3,253,408.10
  5. Step 5: Solve for x
    x = 3,253,408.10/2,039.92
  6. Step 6: Final answer
    x = 1,594.87

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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.