Home / 3,422.78-5,130.96-3,118.44

Finding the Fourth Proportional to 3,422.78, 5,130.96 and 3,118.44

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Solution

The fourth proportional to 3,422.78, 5,130.96 and 3,118.44 is: 4,674.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.78 : 5,130.96 = 3,118.44 : x
  2. Step 2: Convert to fraction form
    3,422.78/5,130.96 = 3,118.44/x
  3. Step 3: Cross multiply
    3,422.78x = 5,130.96 × 3,118.44
  4. Step 4: Simplify right side
    3,422.78x = 16,000,590.90
  5. Step 5: Solve for x
    x = 16,000,590.90/3,422.78
  6. Step 6: Final answer
    x = 4,674.74

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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.