Home / 2,814.48-4,218.43-2,118.91

Finding the Fourth Proportional to 2,814.48, 4,218.43 and 2,118.91

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Solution

The fourth proportional to 2,814.48, 4,218.43 and 2,118.91 is: 3,175.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.48 : 4,218.43 = 2,118.91 : x
  2. Step 2: Convert to fraction form
    2,814.48/4,218.43 = 2,118.91/x
  3. Step 3: Cross multiply
    2,814.48x = 4,218.43 × 2,118.91
  4. Step 4: Simplify right side
    2,814.48x = 8,938,469.55
  5. Step 5: Solve for x
    x = 8,938,469.55/2,814.48
  6. Step 6: Final answer
    x = 3,175.89

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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.