Home / 8,639.34-12,943.34-3,963.26

Finding the Fourth Proportional to 8,639.34, 12,943.34 and 3,963.26

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Solution

The fourth proportional to 8,639.34, 12,943.34 and 3,963.26 is: 5,937.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.34 : 12,943.34 = 3,963.26 : x
  2. Step 2: Convert to fraction form
    8,639.34/12,943.34 = 3,963.26/x
  3. Step 3: Cross multiply
    8,639.34x = 12,943.34 × 3,963.26
  4. Step 4: Simplify right side
    8,639.34x = 51,297,821.69
  5. Step 5: Solve for x
    x = 51,297,821.69/8,639.34
  6. Step 6: Final answer
    x = 5,937.70

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1.5x scale

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.