Home / 3,306.05-4,959.21-840.93

Finding the Fourth Proportional to 3,306.05, 4,959.21 and 840.93

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Solution

The fourth proportional to 3,306.05, 4,959.21 and 840.93 is: 1,261.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,306.05 : 4,959.21 = 840.93 : x
  2. Step 2: Convert to fraction form
    3,306.05/4,959.21 = 840.93/x
  3. Step 3: Cross multiply
    3,306.05x = 4,959.21 × 840.93
  4. Step 4: Simplify right side
    3,306.05x = 4,170,348.47
  5. Step 5: Solve for x
    x = 4,170,348.47/3,306.05
  6. Step 6: Final answer
    x = 1,261.43

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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.