Home / 3,123.20-4,307.30-2,703.42

Finding the Fourth Proportional to 3,123.20, 4,307.30 and 2,703.42

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Solution

The fourth proportional to 3,123.20, 4,307.30 and 2,703.42 is: 3,728.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.20 : 4,307.30 = 2,703.42 : x
  2. Step 2: Convert to fraction form
    3,123.20/4,307.30 = 2,703.42/x
  3. Step 3: Cross multiply
    3,123.20x = 4,307.30 × 2,703.42
  4. Step 4: Simplify right side
    3,123.20x = 11,644,440.97
  5. Step 5: Solve for x
    x = 11,644,440.97/3,123.20
  6. Step 6: Final answer
    x = 3,728.37

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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.