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Finding the Fourth Proportional to 2,998.72, 4,491.12 and 2,894.90

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Solution

The fourth proportional to 2,998.72, 4,491.12 and 2,894.90 is: 4,335.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,998.72 : 4,491.12 = 2,894.90 : x
  2. Step 2: Convert to fraction form
    2,998.72/4,491.12 = 2,894.90/x
  3. Step 3: Cross multiply
    2,998.72x = 4,491.12 × 2,894.90
  4. Step 4: Simplify right side
    2,998.72x = 13,001,343.29
  5. Step 5: Solve for x
    x = 13,001,343.29/2,998.72
  6. Step 6: Final answer
    x = 4,335.63

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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.