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Finding the Fourth Proportional to 3,763.19, 5,648.25 and 1,915.63

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Solution

The fourth proportional to 3,763.19, 5,648.25 and 1,915.63 is: 2,875.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,763.19 : 5,648.25 = 1,915.63 : x
  2. Step 2: Convert to fraction form
    3,763.19/5,648.25 = 1,915.63/x
  3. Step 3: Cross multiply
    3,763.19x = 5,648.25 × 1,915.63
  4. Step 4: Simplify right side
    3,763.19x = 10,819,928.91
  5. Step 5: Solve for x
    x = 10,819,928.91/3,763.19
  6. Step 6: Final answer
    x = 2,875.20

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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.