Home / 4,259.79-6,389.69-1,338.17

Finding the Fourth Proportional to 4,259.79, 6,389.69 and 1,338.17

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Solution

The fourth proportional to 4,259.79, 6,389.69 and 1,338.17 is: 2,007.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,259.79 : 6,389.69 = 1,338.17 : x
  2. Step 2: Convert to fraction form
    4,259.79/6,389.69 = 1,338.17/x
  3. Step 3: Cross multiply
    4,259.79x = 6,389.69 × 1,338.17
  4. Step 4: Simplify right side
    4,259.79x = 8,550,488.77
  5. Step 5: Solve for x
    x = 8,550,488.77/4,259.79
  6. Step 6: Final answer
    x = 2,007.26

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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.