Home / 2,686.61-3,710.66-2,150.11

Finding the Fourth Proportional to 2,686.61, 3,710.66 and 2,150.11

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Solution

The fourth proportional to 2,686.61, 3,710.66 and 2,150.11 is: 2,969.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.61 : 3,710.66 = 2,150.11 : x
  2. Step 2: Convert to fraction form
    2,686.61/3,710.66 = 2,150.11/x
  3. Step 3: Cross multiply
    2,686.61x = 3,710.66 × 2,150.11
  4. Step 4: Simplify right side
    2,686.61x = 7,978,327.17
  5. Step 5: Solve for x
    x = 7,978,327.17/2,686.61
  6. Step 6: Final answer
    x = 2,969.66

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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.