Home / 5,356.91-7,392.86-2,999.81

Finding the Fourth Proportional to 5,356.91, 7,392.86 and 2,999.81

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Solution

The fourth proportional to 5,356.91, 7,392.86 and 2,999.81 is: 4,139.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,356.91 : 7,392.86 = 2,999.81 : x
  2. Step 2: Convert to fraction form
    5,356.91/7,392.86 = 2,999.81/x
  3. Step 3: Cross multiply
    5,356.91x = 7,392.86 × 2,999.81
  4. Step 4: Simplify right side
    5,356.91x = 22,177,123.39
  5. Step 5: Solve for x
    x = 22,177,123.39/5,356.91
  6. Step 6: Final answer
    x = 4,139.91

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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.