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Finding the Fourth Proportional to 5,662.80, 8,489.76 and 2,740.32

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Solution

The fourth proportional to 5,662.80, 8,489.76 and 2,740.32 is: 4,108.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,662.80 : 8,489.76 = 2,740.32 : x
  2. Step 2: Convert to fraction form
    5,662.80/8,489.76 = 2,740.32/x
  3. Step 3: Cross multiply
    5,662.80x = 8,489.76 × 2,740.32
  4. Step 4: Simplify right side
    5,662.80x = 23,264,659.12
  5. Step 5: Solve for x
    x = 23,264,659.12/5,662.80
  6. Step 6: Final answer
    x = 4,108.33

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1.5x scale

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.