Home / 3,138.06-4,706.47-2,981.95

Finding the Fourth Proportional to 3,138.06, 4,706.47 and 2,981.95

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Solution

The fourth proportional to 3,138.06, 4,706.47 and 2,981.95 is: 4,472.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.06 : 4,706.47 = 2,981.95 : x
  2. Step 2: Convert to fraction form
    3,138.06/4,706.47 = 2,981.95/x
  3. Step 3: Cross multiply
    3,138.06x = 4,706.47 × 2,981.95
  4. Step 4: Simplify right side
    3,138.06x = 14,034,458.22
  5. Step 5: Solve for x
    x = 14,034,458.22/3,138.06
  6. Step 6: Final answer
    x = 4,472.34

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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.