Home / 2,186.65-3,017.55-1,191.90

Finding the Fourth Proportional to 2,186.65, 3,017.55 and 1,191.90

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Solution

The fourth proportional to 2,186.65, 3,017.55 and 1,191.90 is: 1,644.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.65 : 3,017.55 = 1,191.90 : x
  2. Step 2: Convert to fraction form
    2,186.65/3,017.55 = 1,191.90/x
  3. Step 3: Cross multiply
    2,186.65x = 3,017.55 × 1,191.90
  4. Step 4: Simplify right side
    2,186.65x = 3,596,617.85
  5. Step 5: Solve for x
    x = 3,596,617.85/2,186.65
  6. Step 6: Final answer
    x = 1,644.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.