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Finding the Fourth Proportional to 5,608.85, 7,739.75 and 3,090.56

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Solution

The fourth proportional to 5,608.85, 7,739.75 and 3,090.56 is: 4,264.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,608.85 : 7,739.75 = 3,090.56 : x
  2. Step 2: Convert to fraction form
    5,608.85/7,739.75 = 3,090.56/x
  3. Step 3: Cross multiply
    5,608.85x = 7,739.75 × 3,090.56
  4. Step 4: Simplify right side
    5,608.85x = 23,920,130.79
  5. Step 5: Solve for x
    x = 23,920,130.79/5,608.85
  6. Step 6: Final answer
    x = 4,264.72

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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.