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Finding the Fourth Proportional to 2,960.38, 4,440.99 and 985.36

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Solution

The fourth proportional to 2,960.38, 4,440.99 and 985.36 is: 1,478.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,960.38 : 4,440.99 = 985.36 : x
  2. Step 2: Convert to fraction form
    2,960.38/4,440.99 = 985.36/x
  3. Step 3: Cross multiply
    2,960.38x = 4,440.99 × 985.36
  4. Step 4: Simplify right side
    2,960.38x = 4,375,973.91
  5. Step 5: Solve for x
    x = 4,375,973.91/2,960.38
  6. Step 6: Final answer
    x = 1,478.18

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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.