Home / 3,784.20-5,674.68-1,187.34

Finding the Fourth Proportional to 3,784.20, 5,674.68 and 1,187.34

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Solution

The fourth proportional to 3,784.20, 5,674.68 and 1,187.34 is: 1,780.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,784.20 : 5,674.68 = 1,187.34 : x
  2. Step 2: Convert to fraction form
    3,784.20/5,674.68 = 1,187.34/x
  3. Step 3: Cross multiply
    3,784.20x = 5,674.68 × 1,187.34
  4. Step 4: Simplify right side
    3,784.20x = 6,737,774.55
  5. Step 5: Solve for x
    x = 6,737,774.55/3,784.20
  6. Step 6: Final answer
    x = 1,780.50

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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.