Home / 8,041.40-12,072.90-5,132.60

Finding the Fourth Proportional to 8,041.40, 12,072.90 and 5,132.60

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Solution

The fourth proportional to 8,041.40, 12,072.90 and 5,132.60 is: 7,705.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,041.40 : 12,072.90 = 5,132.60 : x
  2. Step 2: Convert to fraction form
    8,041.40/12,072.90 = 5,132.60/x
  3. Step 3: Cross multiply
    8,041.40x = 12,072.90 × 5,132.60
  4. Step 4: Simplify right side
    8,041.40x = 61,965,366.54
  5. Step 5: Solve for x
    x = 61,965,366.54/8,041.40
  6. Step 6: Final answer
    x = 7,705.79

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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.