Home / 2,118.08-3,175.20-818.24

Finding the Fourth Proportional to 2,118.08, 3,175.20 and 818.24

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Solution

The fourth proportional to 2,118.08, 3,175.20 and 818.24 is: 1,226.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.08 : 3,175.20 = 818.24 : x
  2. Step 2: Convert to fraction form
    2,118.08/3,175.20 = 818.24/x
  3. Step 3: Cross multiply
    2,118.08x = 3,175.20 × 818.24
  4. Step 4: Simplify right side
    2,118.08x = 2,598,075.65
  5. Step 5: Solve for x
    x = 2,598,075.65/2,118.08
  6. Step 6: Final answer
    x = 1,226.62

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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.