Home / 7,319.40-10,979.04-2,936.80

Finding the Fourth Proportional to 7,319.40, 10,979.04 and 2,936.80

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Solution

The fourth proportional to 7,319.40, 10,979.04 and 2,936.80 is: 4,405.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,319.40 : 10,979.04 = 2,936.80 : x
  2. Step 2: Convert to fraction form
    7,319.40/10,979.04 = 2,936.80/x
  3. Step 3: Cross multiply
    7,319.40x = 10,979.04 × 2,936.80
  4. Step 4: Simplify right side
    7,319.40x = 32,243,244.67
  5. Step 5: Solve for x
    x = 32,243,244.67/7,319.40
  6. Step 6: Final answer
    x = 4,405.18

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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.