Home / 3,108.96-4,665.12-1,878.72

Finding the Fourth Proportional to 3,108.96, 4,665.12 and 1,878.72

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Solution

The fourth proportional to 3,108.96, 4,665.12 and 1,878.72 is: 2,819.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.96 : 4,665.12 = 1,878.72 : x
  2. Step 2: Convert to fraction form
    3,108.96/4,665.12 = 1,878.72/x
  3. Step 3: Cross multiply
    3,108.96x = 4,665.12 × 1,878.72
  4. Step 4: Simplify right side
    3,108.96x = 8,764,454.25
  5. Step 5: Solve for x
    x = 8,764,454.25/3,108.96
  6. Step 6: Final answer
    x = 2,819.10

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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.