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Finding the Fourth Proportional to 2,797.74, 3,860.05 and 2,001.31

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Solution

The fourth proportional to 2,797.74, 3,860.05 and 2,001.31 is: 2,761.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,797.74 : 3,860.05 = 2,001.31 : x
  2. Step 2: Convert to fraction form
    2,797.74/3,860.05 = 2,001.31/x
  3. Step 3: Cross multiply
    2,797.74x = 3,860.05 × 2,001.31
  4. Step 4: Simplify right side
    2,797.74x = 7,725,156.67
  5. Step 5: Solve for x
    x = 7,725,156.67/2,797.74
  6. Step 6: Final answer
    x = 2,761.21

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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.