Home / 7,807.07-11,707.96-2,540.78

Finding the Fourth Proportional to 7,807.07, 11,707.96 and 2,540.78

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Solution

The fourth proportional to 7,807.07, 11,707.96 and 2,540.78 is: 3,810.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,807.07 : 11,707.96 = 2,540.78 : x
  2. Step 2: Convert to fraction form
    7,807.07/11,707.96 = 2,540.78/x
  3. Step 3: Cross multiply
    7,807.07x = 11,707.96 × 2,540.78
  4. Step 4: Simplify right side
    7,807.07x = 29,747,350.61
  5. Step 5: Solve for x
    x = 29,747,350.61/7,807.07
  6. Step 6: Final answer
    x = 3,810.31

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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.