Home / 6,972.32-9,623.57-3,989.09

Finding the Fourth Proportional to 6,972.32, 9,623.57 and 3,989.09

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Solution

The fourth proportional to 6,972.32, 9,623.57 and 3,989.09 is: 5,505.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,972.32 : 9,623.57 = 3,989.09 : x
  2. Step 2: Convert to fraction form
    6,972.32/9,623.57 = 3,989.09/x
  3. Step 3: Cross multiply
    6,972.32x = 9,623.57 × 3,989.09
  4. Step 4: Simplify right side
    6,972.32x = 38,389,218.79
  5. Step 5: Solve for x
    x = 38,389,218.79/6,972.32
  6. Step 6: Final answer
    x = 5,505.95

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1.5x scale

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.