Home / 6,438.11-8,884.40-3,605.78

Finding the Fourth Proportional to 6,438.11, 8,884.40 and 3,605.78

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Solution

The fourth proportional to 6,438.11, 8,884.40 and 3,605.78 is: 4,975.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,438.11 : 8,884.40 = 3,605.78 : x
  2. Step 2: Convert to fraction form
    6,438.11/8,884.40 = 3,605.78/x
  3. Step 3: Cross multiply
    6,438.11x = 8,884.40 × 3,605.78
  4. Step 4: Simplify right side
    6,438.11x = 32,035,129.38
  5. Step 5: Solve for x
    x = 32,035,129.38/6,438.11
  6. Step 6: Final answer
    x = 4,975.86

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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.