Home / 7,986.20-11,980.13-3,060

Finding the Fourth Proportional to 7,986.20, 11,980.13 and 3,060

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Solution

The fourth proportional to 7,986.20, 11,980.13 and 3,060 is: 4,590.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.20 : 11,980.13 = 3,060 : x
  2. Step 2: Convert to fraction form
    7,986.20/11,980.13 = 3,060/x
  3. Step 3: Cross multiply
    7,986.20x = 11,980.13 × 3,060
  4. Step 4: Simplify right side
    7,986.20x = 36,659,182.50
  5. Step 5: Solve for x
    x = 36,659,182.50/7,986.20
  6. Step 6: Final answer
    x = 4,590.32

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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.