Home / 6,438.07-9,660.35-2,977.75

Finding the Fourth Proportional to 6,438.07, 9,660.35 and 2,977.75

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Solution

The fourth proportional to 6,438.07, 9,660.35 and 2,977.75 is: 4,468.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,438.07 : 9,660.35 = 2,977.75 : x
  2. Step 2: Convert to fraction form
    6,438.07/9,660.35 = 2,977.75/x
  3. Step 3: Cross multiply
    6,438.07x = 9,660.35 × 2,977.75
  4. Step 4: Simplify right side
    6,438.07x = 28,766,107.21
  5. Step 5: Solve for x
    x = 28,766,107.21/6,438.07
  6. Step 6: Final answer
    x = 4,468.13

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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.