Home / 6,740.31-9,299.10-4,086.75

Finding the Fourth Proportional to 6,740.31, 9,299.10 and 4,086.75

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Solution

The fourth proportional to 6,740.31, 9,299.10 and 4,086.75 is: 5,638.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,740.31 : 9,299.10 = 4,086.75 : x
  2. Step 2: Convert to fraction form
    6,740.31/9,299.10 = 4,086.75/x
  3. Step 3: Cross multiply
    6,740.31x = 9,299.10 × 4,086.75
  4. Step 4: Simplify right side
    6,740.31x = 38,003,147.12
  5. Step 5: Solve for x
    x = 38,003,147.12/6,740.31
  6. Step 6: Final answer
    x = 5,638.19

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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.