Home / 3,971.46-5,490.36-3,934.08

Finding the Fourth Proportional to 3,971.46, 5,490.36 and 3,934.08

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Solution

The fourth proportional to 3,971.46, 5,490.36 and 3,934.08 is: 5,438.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.46 : 5,490.36 = 3,934.08 : x
  2. Step 2: Convert to fraction form
    3,971.46/5,490.36 = 3,934.08/x
  3. Step 3: Cross multiply
    3,971.46x = 5,490.36 × 3,934.08
  4. Step 4: Simplify right side
    3,971.46x = 21,599,515.47
  5. Step 5: Solve for x
    x = 21,599,515.47/3,971.46
  6. Step 6: Final answer
    x = 5,438.68

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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.