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Finding the Fourth Proportional to 2,801.77, 4,203.12 and 1,340.89

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Solution

The fourth proportional to 2,801.77, 4,203.12 and 1,340.89 is: 2,011.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.77 : 4,203.12 = 1,340.89 : x
  2. Step 2: Convert to fraction form
    2,801.77/4,203.12 = 1,340.89/x
  3. Step 3: Cross multiply
    2,801.77x = 4,203.12 × 1,340.89
  4. Step 4: Simplify right side
    2,801.77x = 5,635,921.58
  5. Step 5: Solve for x
    x = 5,635,921.58/2,801.77
  6. Step 6: Final answer
    x = 2,011.56

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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.