Home / 2,911.19-4,366.67-719.86

Finding the Fourth Proportional to 2,911.19, 4,366.67 and 719.86

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Solution

The fourth proportional to 2,911.19, 4,366.67 and 719.86 is: 1,079.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.19 : 4,366.67 = 719.86 : x
  2. Step 2: Convert to fraction form
    2,911.19/4,366.67 = 719.86/x
  3. Step 3: Cross multiply
    2,911.19x = 4,366.67 × 719.86
  4. Step 4: Simplify right side
    2,911.19x = 3,143,391.07
  5. Step 5: Solve for x
    x = 3,143,391.07/2,911.19
  6. Step 6: Final answer
    x = 1,079.76

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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.