Home / 2,912.63-4,369.82-1,680.92

Finding the Fourth Proportional to 2,912.63, 4,369.82 and 1,680.92

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Solution

The fourth proportional to 2,912.63, 4,369.82 and 1,680.92 is: 2,521.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.63 : 4,369.82 = 1,680.92 : x
  2. Step 2: Convert to fraction form
    2,912.63/4,369.82 = 1,680.92/x
  3. Step 3: Cross multiply
    2,912.63x = 4,369.82 × 1,680.92
  4. Step 4: Simplify right side
    2,912.63x = 7,345,303.97
  5. Step 5: Solve for x
    x = 7,345,303.97/2,912.63
  6. Step 6: Final answer
    x = 2,521.88

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1.5x scale

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.