Home / 3,147.07-4,719.98-2,990.95

Finding the Fourth Proportional to 3,147.07, 4,719.98 and 2,990.95

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Solution

The fourth proportional to 3,147.07, 4,719.98 and 2,990.95 is: 4,485.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.07 : 4,719.98 = 2,990.95 : x
  2. Step 2: Convert to fraction form
    3,147.07/4,719.98 = 2,990.95/x
  3. Step 3: Cross multiply
    3,147.07x = 4,719.98 × 2,990.95
  4. Step 4: Simplify right side
    3,147.07x = 14,117,209.23
  5. Step 5: Solve for x
    x = 14,117,209.23/3,147.07
  6. Step 6: Final answer
    x = 4,485.83

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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.