Home / 4,287.20-6,431.28-1,364.48

Finding the Fourth Proportional to 4,287.20, 6,431.28 and 1,364.48

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Solution

The fourth proportional to 4,287.20, 6,431.28 and 1,364.48 is: 2,046.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,287.20 : 6,431.28 = 1,364.48 : x
  2. Step 2: Convert to fraction form
    4,287.20/6,431.28 = 1,364.48/x
  3. Step 3: Cross multiply
    4,287.20x = 6,431.28 × 1,364.48
  4. Step 4: Simplify right side
    4,287.20x = 8,775,352.93
  5. Step 5: Solve for x
    x = 8,775,352.93/4,287.20
  6. Step 6: Final answer
    x = 2,046.87

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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.