Home / 2,771.45-4,156.03-1,126.88

Finding the Fourth Proportional to 2,771.45, 4,156.03 and 1,126.88

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Solution

The fourth proportional to 2,771.45, 4,156.03 and 1,126.88 is: 1,689.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.45 : 4,156.03 = 1,126.88 : x
  2. Step 2: Convert to fraction form
    2,771.45/4,156.03 = 1,126.88/x
  3. Step 3: Cross multiply
    2,771.45x = 4,156.03 × 1,126.88
  4. Step 4: Simplify right side
    2,771.45x = 4,683,357.48
  5. Step 5: Solve for x
    x = 4,683,357.48/2,771.45
  6. Step 6: Final answer
    x = 1,689.86

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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.