Home / 5,119.76-7,065.47-2,881.62

Finding the Fourth Proportional to 5,119.76, 7,065.47 and 2,881.62

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Solution

The fourth proportional to 5,119.76, 7,065.47 and 2,881.62 is: 3,976.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.76 : 7,065.47 = 2,881.62 : x
  2. Step 2: Convert to fraction form
    5,119.76/7,065.47 = 2,881.62/x
  3. Step 3: Cross multiply
    5,119.76x = 7,065.47 × 2,881.62
  4. Step 4: Simplify right side
    5,119.76x = 20,359,985.25
  5. Step 5: Solve for x
    x = 20,359,985.25/5,119.76
  6. Step 6: Final answer
    x = 3,976.75

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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.