Home / 3,390.12-5,060.63-2,930.85

Finding the Fourth Proportional to 3,390.12, 5,060.63 and 2,930.85

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Solution

The fourth proportional to 3,390.12, 5,060.63 and 2,930.85 is: 4,375.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.12 : 5,060.63 = 2,930.85 : x
  2. Step 2: Convert to fraction form
    3,390.12/5,060.63 = 2,930.85/x
  3. Step 3: Cross multiply
    3,390.12x = 5,060.63 × 2,930.85
  4. Step 4: Simplify right side
    3,390.12x = 14,831,932.78
  5. Step 5: Solve for x
    x = 14,831,932.78/3,390.12
  6. Step 6: Final answer
    x = 4,375.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.