Home / 8,961.86-13,442.63-3,118.34

Finding the Fourth Proportional to 8,961.86, 13,442.63 and 3,118.34

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Solution

The fourth proportional to 8,961.86, 13,442.63 and 3,118.34 is: 4,677.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,961.86 : 13,442.63 = 3,118.34 : x
  2. Step 2: Convert to fraction form
    8,961.86/13,442.63 = 3,118.34/x
  3. Step 3: Cross multiply
    8,961.86x = 13,442.63 × 3,118.34
  4. Step 4: Simplify right side
    8,961.86x = 41,918,608.03
  5. Step 5: Solve for x
    x = 41,918,608.03/8,961.86
  6. Step 6: Final answer
    x = 4,677.45

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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.