Home / 2,771.20-4,155.68-1,127.52

Finding the Fourth Proportional to 2,771.20, 4,155.68 and 1,127.52

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Solution

The fourth proportional to 2,771.20, 4,155.68 and 1,127.52 is: 1,690.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.20 : 4,155.68 = 1,127.52 : x
  2. Step 2: Convert to fraction form
    2,771.20/4,155.68 = 1,127.52/x
  3. Step 3: Cross multiply
    2,771.20x = 4,155.68 × 1,127.52
  4. Step 4: Simplify right side
    2,771.20x = 4,685,612.31
  5. Step 5: Solve for x
    x = 4,685,612.31/2,771.20
  6. Step 6: Final answer
    x = 1,690.82

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1.5x scale

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.