Home / 8,161.48-11,241.84-6,389.92

Finding the Fourth Proportional to 8,161.48, 11,241.84 and 6,389.92

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Solution

The fourth proportional to 8,161.48, 11,241.84 and 6,389.92 is: 8,801.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,161.48 : 11,241.84 = 6,389.92 : x
  2. Step 2: Convert to fraction form
    8,161.48/11,241.84 = 6,389.92/x
  3. Step 3: Cross multiply
    8,161.48x = 11,241.84 × 6,389.92
  4. Step 4: Simplify right side
    8,161.48x = 71,834,458.25
  5. Step 5: Solve for x
    x = 71,834,458.25/8,161.48
  6. Step 6: Final answer
    x = 8,801.65

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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.