Home / 5,117.79-7,062.26-2,879.57

Finding the Fourth Proportional to 5,117.79, 7,062.26 and 2,879.57

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Solution

The fourth proportional to 5,117.79, 7,062.26 and 2,879.57 is: 3,973.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,117.79 : 7,062.26 = 2,879.57 : x
  2. Step 2: Convert to fraction form
    5,117.79/7,062.26 = 2,879.57/x
  3. Step 3: Cross multiply
    5,117.79x = 7,062.26 × 2,879.57
  4. Step 4: Simplify right side
    5,117.79x = 20,336,275.29
  5. Step 5: Solve for x
    x = 20,336,275.29/5,117.79
  6. Step 6: Final answer
    x = 3,973.64

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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.