Home / 2,186.10-3,016.80-1,191.40

Finding the Fourth Proportional to 2,186.10, 3,016.80 and 1,191.40

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Solution

The fourth proportional to 2,186.10, 3,016.80 and 1,191.40 is: 1,644.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.10 : 3,016.80 = 1,191.40 : x
  2. Step 2: Convert to fraction form
    2,186.10/3,016.80 = 1,191.40/x
  3. Step 3: Cross multiply
    2,186.10x = 3,016.80 × 1,191.40
  4. Step 4: Simplify right side
    2,186.10x = 3,594,207.98
  5. Step 5: Solve for x
    x = 3,594,207.98/2,186.10
  6. Step 6: Final answer
    x = 1,644.12

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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.