Home / 10,508.20-15,760.80-3,112.36

Finding the Fourth Proportional to 10,508.20, 15,760.80 and 3,112.36

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Solution

The fourth proportional to 10,508.20, 15,760.80 and 3,112.36 is: 4,668.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,508.20 : 15,760.80 = 3,112.36 : x
  2. Step 2: Convert to fraction form
    10,508.20/15,760.80 = 3,112.36/x
  3. Step 3: Cross multiply
    10,508.20x = 15,760.80 × 3,112.36
  4. Step 4: Simplify right side
    10,508.20x = 49,053,283.49
  5. Step 5: Solve for x
    x = 49,053,283.49/10,508.20
  6. Step 6: Final answer
    x = 4,668.10

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1.5x scale

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.