Home / 9,871.48-13,622.97-5,679.73

Finding the Fourth Proportional to 9,871.48, 13,622.97 and 5,679.73

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Solution

The fourth proportional to 9,871.48, 13,622.97 and 5,679.73 is: 7,838.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,871.48 : 13,622.97 = 5,679.73 : x
  2. Step 2: Convert to fraction form
    9,871.48/13,622.97 = 5,679.73/x
  3. Step 3: Cross multiply
    9,871.48x = 13,622.97 × 5,679.73
  4. Step 4: Simplify right side
    9,871.48x = 77,374,791.40
  5. Step 5: Solve for x
    x = 77,374,791.40/9,871.48
  6. Step 6: Final answer
    x = 7,838.22

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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.