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Finding the Fourth Proportional to 5,608.10, 7,739.20 and 3,090.09

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Solution

The fourth proportional to 5,608.10, 7,739.20 and 3,090.09 is: 4,264.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,608.10 : 7,739.20 = 3,090.09 : x
  2. Step 2: Convert to fraction form
    5,608.10/7,739.20 = 3,090.09/x
  3. Step 3: Cross multiply
    5,608.10x = 7,739.20 × 3,090.09
  4. Step 4: Simplify right side
    5,608.10x = 23,914,824.53
  5. Step 5: Solve for x
    x = 23,914,824.53/5,608.10
  6. Step 6: Final answer
    x = 4,264.34

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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.