Home / 7,022.48-9,690.96-3,878.64

Finding the Fourth Proportional to 7,022.48, 9,690.96 and 3,878.64

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Solution

The fourth proportional to 7,022.48, 9,690.96 and 3,878.64 is: 5,352.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,022.48 : 9,690.96 = 3,878.64 : x
  2. Step 2: Convert to fraction form
    7,022.48/9,690.96 = 3,878.64/x
  3. Step 3: Cross multiply
    7,022.48x = 9,690.96 × 3,878.64
  4. Step 4: Simplify right side
    7,022.48x = 37,587,745.09
  5. Step 5: Solve for x
    x = 37,587,745.09/7,022.48
  6. Step 6: Final answer
    x = 5,352.49

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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.