Home / 7,153.78-9,872.46-3,967.03

Finding the Fourth Proportional to 7,153.78, 9,872.46 and 3,967.03

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Solution

The fourth proportional to 7,153.78, 9,872.46 and 3,967.03 is: 5,474.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,153.78 : 9,872.46 = 3,967.03 : x
  2. Step 2: Convert to fraction form
    7,153.78/9,872.46 = 3,967.03/x
  3. Step 3: Cross multiply
    7,153.78x = 9,872.46 × 3,967.03
  4. Step 4: Simplify right side
    7,153.78x = 39,164,344.99
  5. Step 5: Solve for x
    x = 39,164,344.99/7,153.78
  6. Step 6: Final answer
    x = 5,474.64

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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.