Home / 7,040.25-9,715.55-3,896.64

Finding the Fourth Proportional to 7,040.25, 9,715.55 and 3,896.64

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Solution

The fourth proportional to 7,040.25, 9,715.55 and 3,896.64 is: 5,377.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,040.25 : 9,715.55 = 3,896.64 : x
  2. Step 2: Convert to fraction form
    7,040.25/9,715.55 = 3,896.64/x
  3. Step 3: Cross multiply
    7,040.25x = 9,715.55 × 3,896.64
  4. Step 4: Simplify right side
    7,040.25x = 37,857,981.27
  5. Step 5: Solve for x
    x = 37,857,981.27/7,040.25
  6. Step 6: Final answer
    x = 5,377.36

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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.