Home / 7,022.30-9,690.77-3,878.49

Finding the Fourth Proportional to 7,022.30, 9,690.77 and 3,878.49

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Solution

The fourth proportional to 7,022.30, 9,690.77 and 3,878.49 is: 5,352.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,022.30 : 9,690.77 = 3,878.49 : x
  2. Step 2: Convert to fraction form
    7,022.30/9,690.77 = 3,878.49/x
  3. Step 3: Cross multiply
    7,022.30x = 9,690.77 × 3,878.49
  4. Step 4: Simplify right side
    7,022.30x = 37,585,554.54
  5. Step 5: Solve for x
    x = 37,585,554.54/7,022.30
  6. Step 6: Final answer
    x = 5,352.31

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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.