Home / 6,107.87-8,428.85-3,455.21

Finding the Fourth Proportional to 6,107.87, 8,428.85 and 3,455.21

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Solution

The fourth proportional to 6,107.87, 8,428.85 and 3,455.21 is: 4,768.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,107.87 : 8,428.85 = 3,455.21 : x
  2. Step 2: Convert to fraction form
    6,107.87/8,428.85 = 3,455.21/x
  3. Step 3: Cross multiply
    6,107.87x = 8,428.85 × 3,455.21
  4. Step 4: Simplify right side
    6,107.87x = 29,123,387.39
  5. Step 5: Solve for x
    x = 29,123,387.39/6,107.87
  6. Step 6: Final answer
    x = 4,768.18

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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.