Home / 7,022.18-9,690.66-3,878.48

Finding the Fourth Proportional to 7,022.18, 9,690.66 and 3,878.48

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Solution

The fourth proportional to 7,022.18, 9,690.66 and 3,878.48 is: 5,352.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,022.18 : 9,690.66 = 3,878.48 : x
  2. Step 2: Convert to fraction form
    7,022.18/9,690.66 = 3,878.48/x
  3. Step 3: Cross multiply
    7,022.18x = 9,690.66 × 3,878.48
  4. Step 4: Simplify right side
    7,022.18x = 37,585,031.00
  5. Step 5: Solve for x
    x = 37,585,031.00/7,022.18
  6. Step 6: Final answer
    x = 5,352.33

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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.