Home / 5,275.08-7,911.72-2,639.88

Finding the Fourth Proportional to 5,275.08, 7,911.72 and 2,639.88

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Solution

The fourth proportional to 5,275.08, 7,911.72 and 2,639.88 is: 3,959.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.08 : 7,911.72 = 2,639.88 : x
  2. Step 2: Convert to fraction form
    5,275.08/7,911.72 = 2,639.88/x
  3. Step 3: Cross multiply
    5,275.08x = 7,911.72 × 2,639.88
  4. Step 4: Simplify right side
    5,275.08x = 20,885,991.39
  5. Step 5: Solve for x
    x = 20,885,991.39/5,275.08
  6. Step 6: Final answer
    x = 3,959.37

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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.