Home / 2,686.42-3,707.76-1,691.02

Finding the Fourth Proportional to 2,686.42, 3,707.76 and 1,691.02

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Solution

The fourth proportional to 2,686.42, 3,707.76 and 1,691.02 is: 2,333.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.42 : 3,707.76 = 1,691.02 : x
  2. Step 2: Convert to fraction form
    2,686.42/3,707.76 = 1,691.02/x
  3. Step 3: Cross multiply
    2,686.42x = 3,707.76 × 1,691.02
  4. Step 4: Simplify right side
    2,686.42x = 6,269,896.32
  5. Step 5: Solve for x
    x = 6,269,896.32/2,686.42
  6. Step 6: Final answer
    x = 2,333.92

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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.