Home / 4,309.45-6,464.78-1,387.38

Finding the Fourth Proportional to 4,309.45, 6,464.78 and 1,387.38

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Solution

The fourth proportional to 4,309.45, 6,464.78 and 1,387.38 is: 2,081.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,309.45 : 6,464.78 = 1,387.38 : x
  2. Step 2: Convert to fraction form
    4,309.45/6,464.78 = 1,387.38/x
  3. Step 3: Cross multiply
    4,309.45x = 6,464.78 × 1,387.38
  4. Step 4: Simplify right side
    4,309.45x = 8,969,077.62
  5. Step 5: Solve for x
    x = 8,969,077.62/4,309.45
  6. Step 6: Final answer
    x = 2,081.26

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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.