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Finding the Fourth Proportional to 3,160.72, 4,741.13 and 969.63

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Solution

The fourth proportional to 3,160.72, 4,741.13 and 969.63 is: 1,454.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,160.72 : 4,741.13 = 969.63 : x
  2. Step 2: Convert to fraction form
    3,160.72/4,741.13 = 969.63/x
  3. Step 3: Cross multiply
    3,160.72x = 4,741.13 × 969.63
  4. Step 4: Simplify right side
    3,160.72x = 4,597,141.88
  5. Step 5: Solve for x
    x = 4,597,141.88/3,160.72
  6. Step 6: Final answer
    x = 1,454.46

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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.