Home / 5,217.86-7,826.80-2,718.53

Finding the Fourth Proportional to 5,217.86, 7,826.80 and 2,718.53

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Solution

The fourth proportional to 5,217.86, 7,826.80 and 2,718.53 is: 4,077.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.86 : 7,826.80 = 2,718.53 : x
  2. Step 2: Convert to fraction form
    5,217.86/7,826.80 = 2,718.53/x
  3. Step 3: Cross multiply
    5,217.86x = 7,826.80 × 2,718.53
  4. Step 4: Simplify right side
    5,217.86x = 21,277,377.01
  5. Step 5: Solve for x
    x = 21,277,377.01/5,217.86
  6. Step 6: Final answer
    x = 4,077.80

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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.