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Finding the Fourth Proportional to 7,074.56, 9,763.56 and 4,090.22

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Solution

The fourth proportional to 7,074.56, 9,763.56 and 4,090.22 is: 5,644.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,074.56 : 9,763.56 = 4,090.22 : x
  2. Step 2: Convert to fraction form
    7,074.56/9,763.56 = 4,090.22/x
  3. Step 3: Cross multiply
    7,074.56x = 9,763.56 × 4,090.22
  4. Step 4: Simplify right side
    7,074.56x = 39,935,108.38
  5. Step 5: Solve for x
    x = 39,935,108.38/7,074.56
  6. Step 6: Final answer
    x = 5,644.89

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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.