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Finding the Fourth Proportional to 3,156.67, 4,735.10 and 965.41

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Solution

The fourth proportional to 3,156.67, 4,735.10 and 965.41 is: 1,448.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.67 : 4,735.10 = 965.41 : x
  2. Step 2: Convert to fraction form
    3,156.67/4,735.10 = 965.41/x
  3. Step 3: Cross multiply
    3,156.67x = 4,735.10 × 965.41
  4. Step 4: Simplify right side
    3,156.67x = 4,571,312.89
  5. Step 5: Solve for x
    x = 4,571,312.89/3,156.67
  6. Step 6: Final answer
    x = 1,448.14

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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.