Home / 8,985.13-13,480.12-3,141.79

Finding the Fourth Proportional to 8,985.13, 13,480.12 and 3,141.79

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Solution

The fourth proportional to 8,985.13, 13,480.12 and 3,141.79 is: 4,713.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.13 : 13,480.12 = 3,141.79 : x
  2. Step 2: Convert to fraction form
    8,985.13/13,480.12 = 3,141.79/x
  3. Step 3: Cross multiply
    8,985.13x = 13,480.12 × 3,141.79
  4. Step 4: Simplify right side
    8,985.13x = 42,351,676.44
  5. Step 5: Solve for x
    x = 42,351,676.44/8,985.13
  6. Step 6: Final answer
    x = 4,713.53

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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.