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Finding the Fourth Proportional to 5,059.76, 6,980.81 and 2,821.23

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Solution

The fourth proportional to 5,059.76, 6,980.81 and 2,821.23 is: 3,892.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,059.76 : 6,980.81 = 2,821.23 : x
  2. Step 2: Convert to fraction form
    5,059.76/6,980.81 = 2,821.23/x
  3. Step 3: Cross multiply
    5,059.76x = 6,980.81 × 2,821.23
  4. Step 4: Simplify right side
    5,059.76x = 19,694,456.49
  5. Step 5: Solve for x
    x = 19,694,456.49/5,059.76
  6. Step 6: Final answer
    x = 3,892.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.