Home / 4,520.45-6,780.85-1,921.61

Finding the Fourth Proportional to 4,520.45, 6,780.85 and 1,921.61

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Solution

The fourth proportional to 4,520.45, 6,780.85 and 1,921.61 is: 2,882.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,520.45 : 6,780.85 = 1,921.61 : x
  2. Step 2: Convert to fraction form
    4,520.45/6,780.85 = 1,921.61/x
  3. Step 3: Cross multiply
    4,520.45x = 6,780.85 × 1,921.61
  4. Step 4: Simplify right side
    4,520.45x = 13,030,110.46
  5. Step 5: Solve for x
    x = 13,030,110.46/4,520.45
  6. Step 6: Final answer
    x = 2,882.48

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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.