Home / 3,118.24-4,677.38-1,818.80

Finding the Fourth Proportional to 3,118.24, 4,677.38 and 1,818.80

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Solution

The fourth proportional to 3,118.24, 4,677.38 and 1,818.80 is: 2,728.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.24 : 4,677.38 = 1,818.80 : x
  2. Step 2: Convert to fraction form
    3,118.24/4,677.38 = 1,818.80/x
  3. Step 3: Cross multiply
    3,118.24x = 4,677.38 × 1,818.80
  4. Step 4: Simplify right side
    3,118.24x = 8,507,218.74
  5. Step 5: Solve for x
    x = 8,507,218.74/3,118.24
  6. Step 6: Final answer
    x = 2,728.21

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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.