Home / 2,151.18-3,226.80-612.18

Finding the Fourth Proportional to 2,151.18, 3,226.80 and 612.18

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Solution

The fourth proportional to 2,151.18, 3,226.80 and 612.18 is: 918.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.18 : 3,226.80 = 612.18 : x
  2. Step 2: Convert to fraction form
    2,151.18/3,226.80 = 612.18/x
  3. Step 3: Cross multiply
    2,151.18x = 3,226.80 × 612.18
  4. Step 4: Simplify right side
    2,151.18x = 1,975,382.42
  5. Step 5: Solve for x
    x = 1,975,382.42/2,151.18
  6. Step 6: Final answer
    x = 918.28

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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.