Home / 4,426.35-6,639.92-1,139.45

Finding the Fourth Proportional to 4,426.35, 6,639.92 and 1,139.45

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Solution

The fourth proportional to 4,426.35, 6,639.92 and 1,139.45 is: 1,709.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,426.35 : 6,639.92 = 1,139.45 : x
  2. Step 2: Convert to fraction form
    4,426.35/6,639.92 = 1,139.45/x
  3. Step 3: Cross multiply
    4,426.35x = 6,639.92 × 1,139.45
  4. Step 4: Simplify right side
    4,426.35x = 7,565,843.09
  5. Step 5: Solve for x
    x = 7,565,843.09/4,426.35
  6. Step 6: Final answer
    x = 1,709.28

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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.