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Finding the Fourth Proportional to 2,970.26, 4,431.28 and 2,675

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Solution

The fourth proportional to 2,970.26, 4,431.28 and 2,675 is: 3,990.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.26 : 4,431.28 = 2,675 : x
  2. Step 2: Convert to fraction form
    2,970.26/4,431.28 = 2,675/x
  3. Step 3: Cross multiply
    2,970.26x = 4,431.28 × 2,675
  4. Step 4: Simplify right side
    2,970.26x = 11,853,674
  5. Step 5: Solve for x
    x = 11,853,674/2,970.26
  6. Step 6: Final answer
    x = 3,990.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.