Home / 6,825.72-9,419.88-4,172.70

Finding the Fourth Proportional to 6,825.72, 9,419.88 and 4,172.70

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Solution

The fourth proportional to 6,825.72, 9,419.88 and 4,172.70 is: 5,758.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,825.72 : 9,419.88 = 4,172.70 : x
  2. Step 2: Convert to fraction form
    6,825.72/9,419.88 = 4,172.70/x
  3. Step 3: Cross multiply
    6,825.72x = 9,419.88 × 4,172.70
  4. Step 4: Simplify right side
    6,825.72x = 39,306,333.28
  5. Step 5: Solve for x
    x = 39,306,333.28/6,825.72
  6. Step 6: Final answer
    x = 5,758.56

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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.