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Finding the Fourth Proportional to 5,608.86, 7,740.14 and 3,090.89

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Solution

The fourth proportional to 5,608.86, 7,740.14 and 3,090.89 is: 4,265.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,608.86 : 7,740.14 = 3,090.89 : x
  2. Step 2: Convert to fraction form
    5,608.86/7,740.14 = 3,090.89/x
  3. Step 3: Cross multiply
    5,608.86x = 7,740.14 × 3,090.89
  4. Step 4: Simplify right side
    5,608.86x = 23,923,867.17
  5. Step 5: Solve for x
    x = 23,923,867.17/5,608.86
  6. Step 6: Final answer
    x = 4,265.37

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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.