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Finding the Fourth Proportional to 4,755.49, 7,133.31 and 1,981.49

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Solution

The fourth proportional to 4,755.49, 7,133.31 and 1,981.49 is: 2,972.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,755.49 : 7,133.31 = 1,981.49 : x
  2. Step 2: Convert to fraction form
    4,755.49/7,133.31 = 1,981.49/x
  3. Step 3: Cross multiply
    4,755.49x = 7,133.31 × 1,981.49
  4. Step 4: Simplify right side
    4,755.49x = 14,134,546.77
  5. Step 5: Solve for x
    x = 14,134,546.77/4,755.49
  6. Step 6: Final answer
    x = 2,972.26

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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.