Home / 4,920.12-7,380.10-1,222.38

Finding the Fourth Proportional to 4,920.12, 7,380.10 and 1,222.38

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Solution

The fourth proportional to 4,920.12, 7,380.10 and 1,222.38 is: 1,833.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.12 : 7,380.10 = 1,222.38 : x
  2. Step 2: Convert to fraction form
    4,920.12/7,380.10 = 1,222.38/x
  3. Step 3: Cross multiply
    4,920.12x = 7,380.10 × 1,222.38
  4. Step 4: Simplify right side
    4,920.12x = 9,021,280.53
  5. Step 5: Solve for x
    x = 9,021,280.53/4,920.12
  6. Step 6: Final answer
    x = 1,833.55

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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.