Home / 2,771.30-4,156.58-1,127.86

Finding the Fourth Proportional to 2,771.30, 4,156.58 and 1,127.86

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Solution

The fourth proportional to 2,771.30, 4,156.58 and 1,127.86 is: 1,691.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.30 : 4,156.58 = 1,127.86 : x
  2. Step 2: Convert to fraction form
    2,771.30/4,156.58 = 1,127.86/x
  3. Step 3: Cross multiply
    2,771.30x = 4,156.58 × 1,127.86
  4. Step 4: Simplify right side
    2,771.30x = 4,688,040.32
  5. Step 5: Solve for x
    x = 4,688,040.32/2,771.30
  6. Step 6: Final answer
    x = 1,691.64

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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.