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Finding the Fourth Proportional to 2,007.90, 2,771.02 and 1,123.76

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Solution

The fourth proportional to 2,007.90, 2,771.02 and 1,123.76 is: 1,550.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,007.90 : 2,771.02 = 1,123.76 : x
  2. Step 2: Convert to fraction form
    2,007.90/2,771.02 = 1,123.76/x
  3. Step 3: Cross multiply
    2,007.90x = 2,771.02 × 1,123.76
  4. Step 4: Simplify right side
    2,007.90x = 3,113,961.44
  5. Step 5: Solve for x
    x = 3,113,961.44/2,007.90
  6. Step 6: Final answer
    x = 1,550.85

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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.