Home / 7,946.80-11,911.56-5,175.40

Finding the Fourth Proportional to 7,946.80, 11,911.56 and 5,175.40

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Solution

The fourth proportional to 7,946.80, 11,911.56 and 5,175.40 is: 7,757.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,946.80 : 11,911.56 = 5,175.40 : x
  2. Step 2: Convert to fraction form
    7,946.80/11,911.56 = 5,175.40/x
  3. Step 3: Cross multiply
    7,946.80x = 11,911.56 × 5,175.40
  4. Step 4: Simplify right side
    7,946.80x = 61,647,087.62
  5. Step 5: Solve for x
    x = 61,647,087.62/7,946.80
  6. Step 6: Final answer
    x = 7,757.47

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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.