Home / 3,123.35-4,686.97-1,274.46

Finding the Fourth Proportional to 3,123.35, 4,686.97 and 1,274.46

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Solution

The fourth proportional to 3,123.35, 4,686.97 and 1,274.46 is: 1,912.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.35 : 4,686.97 = 1,274.46 : x
  2. Step 2: Convert to fraction form
    3,123.35/4,686.97 = 1,274.46/x
  3. Step 3: Cross multiply
    3,123.35x = 4,686.97 × 1,274.46
  4. Step 4: Simplify right side
    3,123.35x = 5,973,355.79
  5. Step 5: Solve for x
    x = 5,973,355.79/3,123.35
  6. Step 6: Final answer
    x = 1,912.48

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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.