Home / 8,759.31-13,135.08-3,211.20

Finding the Fourth Proportional to 8,759.31, 13,135.08 and 3,211.20

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Solution

The fourth proportional to 8,759.31, 13,135.08 and 3,211.20 is: 4,815.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,759.31 : 13,135.08 = 3,211.20 : x
  2. Step 2: Convert to fraction form
    8,759.31/13,135.08 = 3,211.20/x
  3. Step 3: Cross multiply
    8,759.31x = 13,135.08 × 3,211.20
  4. Step 4: Simplify right side
    8,759.31x = 42,179,368.90
  5. Step 5: Solve for x
    x = 42,179,368.90/8,759.31
  6. Step 6: Final answer
    x = 4,815.38

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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.