Home / 4,311.92-6,468.48-1,390.84

Finding the Fourth Proportional to 4,311.92, 6,468.48 and 1,390.84

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Solution

The fourth proportional to 4,311.92, 6,468.48 and 1,390.84 is: 2,086.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,311.92 : 6,468.48 = 1,390.84 : x
  2. Step 2: Convert to fraction form
    4,311.92/6,468.48 = 1,390.84/x
  3. Step 3: Cross multiply
    4,311.92x = 6,468.48 × 1,390.84
  4. Step 4: Simplify right side
    4,311.92x = 8,996,620.72
  5. Step 5: Solve for x
    x = 8,996,620.72/4,311.92
  6. Step 6: Final answer
    x = 2,086.45

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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.