Home / 5,117.87-7,062.27-2,879.31

Finding the Fourth Proportional to 5,117.87, 7,062.27 and 2,879.31

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Solution

The fourth proportional to 5,117.87, 7,062.27 and 2,879.31 is: 3,973.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,117.87 : 7,062.27 = 2,879.31 : x
  2. Step 2: Convert to fraction form
    5,117.87/7,062.27 = 2,879.31/x
  3. Step 3: Cross multiply
    5,117.87x = 7,062.27 × 2,879.31
  4. Step 4: Simplify right side
    5,117.87x = 20,334,471.83
  5. Step 5: Solve for x
    x = 20,334,471.83/5,117.87
  6. Step 6: Final answer
    x = 3,973.23

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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.