Home / 3,138.57-4,707.84-1,191.53

Finding the Fourth Proportional to 3,138.57, 4,707.84 and 1,191.53

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Solution

The fourth proportional to 3,138.57, 4,707.84 and 1,191.53 is: 1,787.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.57 : 4,707.84 = 1,191.53 : x
  2. Step 2: Convert to fraction form
    3,138.57/4,707.84 = 1,191.53/x
  3. Step 3: Cross multiply
    3,138.57x = 4,707.84 × 1,191.53
  4. Step 4: Simplify right side
    3,138.57x = 5,609,509.06
  5. Step 5: Solve for x
    x = 5,609,509.06/3,138.57
  6. Step 6: Final answer
    x = 1,787.28

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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.