Home / 7,419.66-11,121.79-4,639.95

Finding the Fourth Proportional to 7,419.66, 11,121.79 and 4,639.95

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Solution

The fourth proportional to 7,419.66, 11,121.79 and 4,639.95 is: 6,955.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,419.66 : 11,121.79 = 4,639.95 : x
  2. Step 2: Convert to fraction form
    7,419.66/11,121.79 = 4,639.95/x
  3. Step 3: Cross multiply
    7,419.66x = 11,121.79 × 4,639.95
  4. Step 4: Simplify right side
    7,419.66x = 51,604,493.90
  5. Step 5: Solve for x
    x = 51,604,493.90/7,419.66
  6. Step 6: Final answer
    x = 6,955.11

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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.