Home / 8,050.40-12,077.70-3,120.20

Finding the Fourth Proportional to 8,050.40, 12,077.70 and 3,120.20

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Solution

The fourth proportional to 8,050.40, 12,077.70 and 3,120.20 is: 4,681.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,050.40 : 12,077.70 = 3,120.20 : x
  2. Step 2: Convert to fraction form
    8,050.40/12,077.70 = 3,120.20/x
  3. Step 3: Cross multiply
    8,050.40x = 12,077.70 × 3,120.20
  4. Step 4: Simplify right side
    8,050.40x = 37,684,839.54
  5. Step 5: Solve for x
    x = 37,684,839.54/8,050.40
  6. Step 6: Final answer
    x = 4,681.11

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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.