Home / 7,691.80-11,537.54-2,145.00

Finding the Fourth Proportional to 7,691.80, 11,537.54 and 2,145.00

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Solution

The fourth proportional to 7,691.80, 11,537.54 and 2,145.00 is: 3,217.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,691.80 : 11,537.54 = 2,145.00 : x
  2. Step 2: Convert to fraction form
    7,691.80/11,537.54 = 2,145.00/x
  3. Step 3: Cross multiply
    7,691.80x = 11,537.54 × 2,145.00
  4. Step 4: Simplify right side
    7,691.80x = 24,747,986.41
  5. Step 5: Solve for x
    x = 24,747,986.41/7,691.80
  6. Step 6: Final answer
    x = 3,217.45

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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.