Home / 2,912.85-4,369.82-2,648.76

Finding the Fourth Proportional to 2,912.85, 4,369.82 and 2,648.76

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Solution

The fourth proportional to 2,912.85, 4,369.82 and 2,648.76 is: 3,973.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.85 : 4,369.82 = 2,648.76 : x
  2. Step 2: Convert to fraction form
    2,912.85/4,369.82 = 2,648.76/x
  3. Step 3: Cross multiply
    2,912.85x = 4,369.82 × 2,648.76
  4. Step 4: Simplify right side
    2,912.85x = 11,574,591.18
  5. Step 5: Solve for x
    x = 11,574,591.18/2,912.85
  6. Step 6: Final answer
    x = 3,973.63

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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.