Home / 2,771.46-4,155.36-1,126.35

Finding the Fourth Proportional to 2,771.46, 4,155.36 and 1,126.35

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Solution

The fourth proportional to 2,771.46, 4,155.36 and 1,126.35 is: 1,688.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.46 : 4,155.36 = 1,126.35 : x
  2. Step 2: Convert to fraction form
    2,771.46/4,155.36 = 1,126.35/x
  3. Step 3: Cross multiply
    2,771.46x = 4,155.36 × 1,126.35
  4. Step 4: Simplify right side
    2,771.46x = 4,680,389.74
  5. Step 5: Solve for x
    x = 4,680,389.74/2,771.46
  6. Step 6: Final answer
    x = 1,688.78

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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.