Home / 8,359.12-12,531.36-5,399.36

Finding the Fourth Proportional to 8,359.12, 12,531.36 and 5,399.36

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Solution

The fourth proportional to 8,359.12, 12,531.36 and 5,399.36 is: 8,094.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,359.12 : 12,531.36 = 5,399.36 : x
  2. Step 2: Convert to fraction form
    8,359.12/12,531.36 = 5,399.36/x
  3. Step 3: Cross multiply
    8,359.12x = 12,531.36 × 5,399.36
  4. Step 4: Simplify right side
    8,359.12x = 67,661,323.93
  5. Step 5: Solve for x
    x = 67,661,323.93/8,359.12
  6. Step 6: Final answer
    x = 8,094.31

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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.