Home / 7,022.36-9,690.88-3,878.54

Finding the Fourth Proportional to 7,022.36, 9,690.88 and 3,878.54

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Solution

The fourth proportional to 7,022.36, 9,690.88 and 3,878.54 is: 5,352.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,022.36 : 9,690.88 = 3,878.54 : x
  2. Step 2: Convert to fraction form
    7,022.36/9,690.88 = 3,878.54/x
  3. Step 3: Cross multiply
    7,022.36x = 9,690.88 × 3,878.54
  4. Step 4: Simplify right side
    7,022.36x = 37,586,465.72
  5. Step 5: Solve for x
    x = 37,586,465.72/7,022.36
  6. Step 6: Final answer
    x = 5,352.40

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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.