Home / 3,657.55-5,486.89-1,191.79

Finding the Fourth Proportional to 3,657.55, 5,486.89 and 1,191.79

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Solution

The fourth proportional to 3,657.55, 5,486.89 and 1,191.79 is: 1,787.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,657.55 : 5,486.89 = 1,191.79 : x
  2. Step 2: Convert to fraction form
    3,657.55/5,486.89 = 1,191.79/x
  3. Step 3: Cross multiply
    3,657.55x = 5,486.89 × 1,191.79
  4. Step 4: Simplify right side
    3,657.55x = 6,539,214.67
  5. Step 5: Solve for x
    x = 6,539,214.67/3,657.55
  6. Step 6: Final answer
    x = 1,787.87

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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.