Home / 2,990.06-4,126.19-1,645.66

Finding the Fourth Proportional to 2,990.06, 4,126.19 and 1,645.66

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Solution

The fourth proportional to 2,990.06, 4,126.19 and 1,645.66 is: 2,270.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.06 : 4,126.19 = 1,645.66 : x
  2. Step 2: Convert to fraction form
    2,990.06/4,126.19 = 1,645.66/x
  3. Step 3: Cross multiply
    2,990.06x = 4,126.19 × 1,645.66
  4. Step 4: Simplify right side
    2,990.06x = 6,790,276.98
  5. Step 5: Solve for x
    x = 6,790,276.98/2,990.06
  6. Step 6: Final answer
    x = 2,270.95

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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.