Home / 7,080.12-10,619.64-2,919

Finding the Fourth Proportional to 7,080.12, 10,619.64 and 2,919

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Solution

The fourth proportional to 7,080.12, 10,619.64 and 2,919 is: 4,378.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,080.12 : 10,619.64 = 2,919 : x
  2. Step 2: Convert to fraction form
    7,080.12/10,619.64 = 2,919/x
  3. Step 3: Cross multiply
    7,080.12x = 10,619.64 × 2,919
  4. Step 4: Simplify right side
    7,080.12x = 30,998,729.16
  5. Step 5: Solve for x
    x = 30,998,729.16/7,080.12
  6. Step 6: Final answer
    x = 4,378.28

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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.