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Finding the Fourth Proportional to 3,363.96, 5,044.56 and 1,980.06

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Solution

The fourth proportional to 3,363.96, 5,044.56 and 1,980.06 is: 2,969.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,363.96 : 5,044.56 = 1,980.06 : x
  2. Step 2: Convert to fraction form
    3,363.96/5,044.56 = 1,980.06/x
  3. Step 3: Cross multiply
    3,363.96x = 5,044.56 × 1,980.06
  4. Step 4: Simplify right side
    3,363.96x = 9,988,531.47
  5. Step 5: Solve for x
    x = 9,988,531.47/3,363.96
  6. Step 6: Final answer
    x = 2,969.28

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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.