Home / 2,997.79-4,498.98-2,118.40

Finding the Fourth Proportional to 2,997.79, 4,498.98 and 2,118.40

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Solution

The fourth proportional to 2,997.79, 4,498.98 and 2,118.40 is: 3,179.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,997.79 : 4,498.98 = 2,118.40 : x
  2. Step 2: Convert to fraction form
    2,997.79/4,498.98 = 2,118.40/x
  3. Step 3: Cross multiply
    2,997.79x = 4,498.98 × 2,118.40
  4. Step 4: Simplify right side
    2,997.79x = 9,530,620.04
  5. Step 5: Solve for x
    x = 9,530,620.04/2,997.79
  6. Step 6: Final answer
    x = 3,179.22

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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.