Home / 4,902.15-7,353.20-2,128.46

Finding the Fourth Proportional to 4,902.15, 7,353.20 and 2,128.46

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Solution

The fourth proportional to 4,902.15, 7,353.20 and 2,128.46 is: 3,192.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,902.15 : 7,353.20 = 2,128.46 : x
  2. Step 2: Convert to fraction form
    4,902.15/7,353.20 = 2,128.46/x
  3. Step 3: Cross multiply
    4,902.15x = 7,353.20 × 2,128.46
  4. Step 4: Simplify right side
    4,902.15x = 15,650,992.07
  5. Step 5: Solve for x
    x = 15,650,992.07/4,902.15
  6. Step 6: Final answer
    x = 3,192.68

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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.