Home / 2,912.25-4,018.91-1,670.25

Finding the Fourth Proportional to 2,912.25, 4,018.91 and 1,670.25

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Solution

The fourth proportional to 2,912.25, 4,018.91 and 1,670.25 is: 2,304.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.25 : 4,018.91 = 1,670.25 : x
  2. Step 2: Convert to fraction form
    2,912.25/4,018.91 = 1,670.25/x
  3. Step 3: Cross multiply
    2,912.25x = 4,018.91 × 1,670.25
  4. Step 4: Simplify right side
    2,912.25x = 6,712,584.43
  5. Step 5: Solve for x
    x = 6,712,584.43/2,912.25
  6. Step 6: Final answer
    x = 2,304.95

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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.