Home / 1,686.47-2,330.30-1,296.86

Finding the Fourth Proportional to 1,686.47, 2,330.30 and 1,296.86

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Solution

The fourth proportional to 1,686.47, 2,330.30 and 1,296.86 is: 1,791.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.47 : 2,330.30 = 1,296.86 : x
  2. Step 2: Convert to fraction form
    1,686.47/2,330.30 = 1,296.86/x
  3. Step 3: Cross multiply
    1,686.47x = 2,330.30 × 1,296.86
  4. Step 4: Simplify right side
    1,686.47x = 3,022,064.45
  5. Step 5: Solve for x
    x = 3,022,064.45/1,686.47
  6. Step 6: Final answer
    x = 1,791.95

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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.