Home / 5,260.80-7,881.12-2,945.28

Finding the Fourth Proportional to 5,260.80, 7,881.12 and 2,945.28

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Solution

The fourth proportional to 5,260.80, 7,881.12 and 2,945.28 is: 4,412.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,260.80 : 7,881.12 = 2,945.28 : x
  2. Step 2: Convert to fraction form
    5,260.80/7,881.12 = 2,945.28/x
  3. Step 3: Cross multiply
    5,260.80x = 7,881.12 × 2,945.28
  4. Step 4: Simplify right side
    5,260.80x = 23,212,105.11
  5. Step 5: Solve for x
    x = 23,212,105.11/5,260.80
  6. Step 6: Final answer
    x = 4,412.28

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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.