Home / 5,122.13-7,683.59-1,789.79

Finding the Fourth Proportional to 5,122.13, 7,683.59 and 1,789.79

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Solution

The fourth proportional to 5,122.13, 7,683.59 and 1,789.79 is: 2,684.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.13 : 7,683.59 = 1,789.79 : x
  2. Step 2: Convert to fraction form
    5,122.13/7,683.59 = 1,789.79/x
  3. Step 3: Cross multiply
    5,122.13x = 7,683.59 × 1,789.79
  4. Step 4: Simplify right side
    5,122.13x = 13,751,965.18
  5. Step 5: Solve for x
    x = 13,751,965.18/5,122.13
  6. Step 6: Final answer
    x = 2,684.82

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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.