Home / 2,919.12-3,996.15-2,898.28

Finding the Fourth Proportional to 2,919.12, 3,996.15 and 2,898.28

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Solution

The fourth proportional to 2,919.12, 3,996.15 and 2,898.28 is: 3,967.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.12 : 3,996.15 = 2,898.28 : x
  2. Step 2: Convert to fraction form
    2,919.12/3,996.15 = 2,898.28/x
  3. Step 3: Cross multiply
    2,919.12x = 3,996.15 × 2,898.28
  4. Step 4: Simplify right side
    2,919.12x = 11,581,961.62
  5. Step 5: Solve for x
    x = 11,581,961.62/2,919.12
  6. Step 6: Final answer
    x = 3,967.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.