Home / 5,811.84-8,720.28-4,147.92

Finding the Fourth Proportional to 5,811.84, 8,720.28 and 4,147.92

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Solution

The fourth proportional to 5,811.84, 8,720.28 and 4,147.92 is: 6,223.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.84 : 8,720.28 = 4,147.92 : x
  2. Step 2: Convert to fraction form
    5,811.84/8,720.28 = 4,147.92/x
  3. Step 3: Cross multiply
    5,811.84x = 8,720.28 × 4,147.92
  4. Step 4: Simplify right side
    5,811.84x = 36,171,023.82
  5. Step 5: Solve for x
    x = 36,171,023.82/5,811.84
  6. Step 6: Final answer
    x = 6,223.68

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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.