Home / 5,119.71-7,065.23-2,881.62

Finding the Fourth Proportional to 5,119.71, 7,065.23 and 2,881.62

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Solution

The fourth proportional to 5,119.71, 7,065.23 and 2,881.62 is: 3,976.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.71 : 7,065.23 = 2,881.62 : x
  2. Step 2: Convert to fraction form
    5,119.71/7,065.23 = 2,881.62/x
  3. Step 3: Cross multiply
    5,119.71x = 7,065.23 × 2,881.62
  4. Step 4: Simplify right side
    5,119.71x = 20,359,308.07
  5. Step 5: Solve for x
    x = 20,359,308.07/5,119.71
  6. Step 6: Final answer
    x = 3,976.65

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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.