Home / 7,617.84-11,428.20-3,458.15

Finding the Fourth Proportional to 7,617.84, 11,428.20 and 3,458.15

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Solution

The fourth proportional to 7,617.84, 11,428.20 and 3,458.15 is: 5,187.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,617.84 : 11,428.20 = 3,458.15 : x
  2. Step 2: Convert to fraction form
    7,617.84/11,428.20 = 3,458.15/x
  3. Step 3: Cross multiply
    7,617.84x = 11,428.20 × 3,458.15
  4. Step 4: Simplify right side
    7,617.84x = 39,520,372.69
  5. Step 5: Solve for x
    x = 39,520,372.69/7,617.84
  6. Step 6: Final answer
    x = 5,187.87

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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.