Home / 5,342.56-8,011.20-3,121.95

Finding the Fourth Proportional to 5,342.56, 8,011.20 and 3,121.95

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Solution

The fourth proportional to 5,342.56, 8,011.20 and 3,121.95 is: 4,681.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,342.56 : 8,011.20 = 3,121.95 : x
  2. Step 2: Convert to fraction form
    5,342.56/8,011.20 = 3,121.95/x
  3. Step 3: Cross multiply
    5,342.56x = 8,011.20 × 3,121.95
  4. Step 4: Simplify right side
    5,342.56x = 25,010,565.84
  5. Step 5: Solve for x
    x = 25,010,565.84/5,342.56
  6. Step 6: Final answer
    x = 4,681.38

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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.