Home / 3,834.86-5,289.95-2,639.70

Finding the Fourth Proportional to 3,834.86, 5,289.95 and 2,639.70

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Solution

The fourth proportional to 3,834.86, 5,289.95 and 2,639.70 is: 3,641.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,834.86 : 5,289.95 = 2,639.70 : x
  2. Step 2: Convert to fraction form
    3,834.86/5,289.95 = 2,639.70/x
  3. Step 3: Cross multiply
    3,834.86x = 5,289.95 × 2,639.70
  4. Step 4: Simplify right side
    3,834.86x = 13,963,867.82
  5. Step 5: Solve for x
    x = 13,963,867.82/3,834.86
  6. Step 6: Final answer
    x = 3,641.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.