Home / 3,678.80-5,518.58-1,179.11

Finding the Fourth Proportional to 3,678.80, 5,518.58 and 1,179.11

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Solution

The fourth proportional to 3,678.80, 5,518.58 and 1,179.11 is: 1,768.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.80 : 5,518.58 = 1,179.11 : x
  2. Step 2: Convert to fraction form
    3,678.80/5,518.58 = 1,179.11/x
  3. Step 3: Cross multiply
    3,678.80x = 5,518.58 × 1,179.11
  4. Step 4: Simplify right side
    3,678.80x = 6,506,996.36
  5. Step 5: Solve for x
    x = 6,506,996.36/3,678.80
  6. Step 6: Final answer
    x = 1,768.78

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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.