Home / 6,639.14-9,157.97-4,087.31

Finding the Fourth Proportional to 6,639.14, 9,157.97 and 4,087.31

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Solution

The fourth proportional to 6,639.14, 9,157.97 and 4,087.31 is: 5,637.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.14 : 9,157.97 = 4,087.31 : x
  2. Step 2: Convert to fraction form
    6,639.14/9,157.97 = 4,087.31/x
  3. Step 3: Cross multiply
    6,639.14x = 9,157.97 × 4,087.31
  4. Step 4: Simplify right side
    6,639.14x = 37,431,396.13
  5. Step 5: Solve for x
    x = 37,431,396.13/6,639.14
  6. Step 6: Final answer
    x = 5,637.99

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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.