Home / 3,788.80-5,683.56-1,191.72

Finding the Fourth Proportional to 3,788.80, 5,683.56 and 1,191.72

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Solution

The fourth proportional to 3,788.80, 5,683.56 and 1,191.72 is: 1,787.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,788.80 : 5,683.56 = 1,191.72 : x
  2. Step 2: Convert to fraction form
    3,788.80/5,683.56 = 1,191.72/x
  3. Step 3: Cross multiply
    3,788.80x = 5,683.56 × 1,191.72
  4. Step 4: Simplify right side
    3,788.80x = 6,773,212.12
  5. Step 5: Solve for x
    x = 6,773,212.12/3,788.80
  6. Step 6: Final answer
    x = 1,787.69

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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.