Home / 5,261.90-7,261.47-2,871.89

Finding the Fourth Proportional to 5,261.90, 7,261.47 and 2,871.89

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Solution

The fourth proportional to 5,261.90, 7,261.47 and 2,871.89 is: 3,963.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.90 : 7,261.47 = 2,871.89 : x
  2. Step 2: Convert to fraction form
    5,261.90/7,261.47 = 2,871.89/x
  3. Step 3: Cross multiply
    5,261.90x = 7,261.47 × 2,871.89
  4. Step 4: Simplify right side
    5,261.90x = 20,854,154.05
  5. Step 5: Solve for x
    x = 20,854,154.05/5,261.90
  6. Step 6: Final answer
    x = 3,963.23

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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.