Home / 3,118.06-4,672.50-2,129.68

Finding the Fourth Proportional to 3,118.06, 4,672.50 and 2,129.68

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Solution

The fourth proportional to 3,118.06, 4,672.50 and 2,129.68 is: 3,191.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.06 : 4,672.50 = 2,129.68 : x
  2. Step 2: Convert to fraction form
    3,118.06/4,672.50 = 2,129.68/x
  3. Step 3: Cross multiply
    3,118.06x = 4,672.50 × 2,129.68
  4. Step 4: Simplify right side
    3,118.06x = 9,950,929.80
  5. Step 5: Solve for x
    x = 9,950,929.80/3,118.06
  6. Step 6: Final answer
    x = 3,191.38

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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.