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Finding the Fourth Proportional to 3,156.16, 4,735 and 964.74

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Solution

The fourth proportional to 3,156.16, 4,735 and 964.74 is: 1,447.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.16 : 4,735 = 964.74 : x
  2. Step 2: Convert to fraction form
    3,156.16/4,735 = 964.74/x
  3. Step 3: Cross multiply
    3,156.16x = 4,735 × 964.74
  4. Step 4: Simplify right side
    3,156.16x = 4,568,043.90
  5. Step 5: Solve for x
    x = 4,568,043.90/3,156.16
  6. Step 6: Final answer
    x = 1,447.34

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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.