Home / 6,639.81-9,156.96-5,524.44

Finding the Fourth Proportional to 6,639.81, 9,156.96 and 5,524.44

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Solution

The fourth proportional to 6,639.81, 9,156.96 and 5,524.44 is: 7,618.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.81 : 9,156.96 = 5,524.44 : x
  2. Step 2: Convert to fraction form
    6,639.81/9,156.96 = 5,524.44/x
  3. Step 3: Cross multiply
    6,639.81x = 9,156.96 × 5,524.44
  4. Step 4: Simplify right side
    6,639.81x = 50,587,076.10
  5. Step 5: Solve for x
    x = 50,587,076.10/6,639.81
  6. Step 6: Final answer
    x = 7,618.75

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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.