Home / 5,243.81-7,236.97-3,915.21

Finding the Fourth Proportional to 5,243.81, 7,236.97 and 3,915.21

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Solution

The fourth proportional to 5,243.81, 7,236.97 and 3,915.21 is: 5,403.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,243.81 : 7,236.97 = 3,915.21 : x
  2. Step 2: Convert to fraction form
    5,243.81/7,236.97 = 3,915.21/x
  3. Step 3: Cross multiply
    5,243.81x = 7,236.97 × 3,915.21
  4. Step 4: Simplify right side
    5,243.81x = 28,334,257.31
  5. Step 5: Solve for x
    x = 28,334,257.31/5,243.81
  6. Step 6: Final answer
    x = 5,403.37

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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.