Home / 8,119.68-11,207.56-4,763.20

Finding the Fourth Proportional to 8,119.68, 11,207.56 and 4,763.20

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Solution

The fourth proportional to 8,119.68, 11,207.56 and 4,763.20 is: 6,574.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.68 : 11,207.56 = 4,763.20 : x
  2. Step 2: Convert to fraction form
    8,119.68/11,207.56 = 4,763.20/x
  3. Step 3: Cross multiply
    8,119.68x = 11,207.56 × 4,763.20
  4. Step 4: Simplify right side
    8,119.68x = 53,383,849.79
  5. Step 5: Solve for x
    x = 53,383,849.79/8,119.68
  6. Step 6: Final answer
    x = 6,574.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.