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Finding the Fourth Proportional to 3,915.18, 5,869.53 and 1,969.56

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Solution

The fourth proportional to 3,915.18, 5,869.53 and 1,969.56 is: 2,952.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.18 : 5,869.53 = 1,969.56 : x
  2. Step 2: Convert to fraction form
    3,915.18/5,869.53 = 1,969.56/x
  3. Step 3: Cross multiply
    3,915.18x = 5,869.53 × 1,969.56
  4. Step 4: Simplify right side
    3,915.18x = 11,560,391.51
  5. Step 5: Solve for x
    x = 11,560,391.51/3,915.18
  6. Step 6: Final answer
    x = 2,952.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.