Home / 5,120.59-7,677.34-2,615.66

Finding the Fourth Proportional to 5,120.59, 7,677.34 and 2,615.66

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Solution

The fourth proportional to 5,120.59, 7,677.34 and 2,615.66 is: 3,921.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.59 : 7,677.34 = 2,615.66 : x
  2. Step 2: Convert to fraction form
    5,120.59/7,677.34 = 2,615.66/x
  3. Step 3: Cross multiply
    5,120.59x = 7,677.34 × 2,615.66
  4. Step 4: Simplify right side
    5,120.59x = 20,081,323.80
  5. Step 5: Solve for x
    x = 20,081,323.80/5,120.59
  6. Step 6: Final answer
    x = 3,921.68

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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.