Home / 3,191.80-4,784.40-2,312.14

Finding the Fourth Proportional to 3,191.80, 4,784.40 and 2,312.14

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Solution

The fourth proportional to 3,191.80, 4,784.40 and 2,312.14 is: 3,465.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.80 : 4,784.40 = 2,312.14 : x
  2. Step 2: Convert to fraction form
    3,191.80/4,784.40 = 2,312.14/x
  3. Step 3: Cross multiply
    3,191.80x = 4,784.40 × 2,312.14
  4. Step 4: Simplify right side
    3,191.80x = 11,062,202.62
  5. Step 5: Solve for x
    x = 11,062,202.62/3,191.80
  6. Step 6: Final answer
    x = 3,465.82

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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.