Home / 2,478.21-3,717.36-1,179.42

Finding the Fourth Proportional to 2,478.21, 3,717.36 and 1,179.42

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Solution

The fourth proportional to 2,478.21, 3,717.36 and 1,179.42 is: 1,769.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.21 : 3,717.36 = 1,179.42 : x
  2. Step 2: Convert to fraction form
    2,478.21/3,717.36 = 1,179.42/x
  3. Step 3: Cross multiply
    2,478.21x = 3,717.36 × 1,179.42
  4. Step 4: Simplify right side
    2,478.21x = 4,384,328.73
  5. Step 5: Solve for x
    x = 4,384,328.73/2,478.21
  6. Step 6: Final answer
    x = 1,769.15

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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.