Home / 1,686.42-2,324.30-1,292.76

Finding the Fourth Proportional to 1,686.42, 2,324.30 and 1,292.76

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Solution

The fourth proportional to 1,686.42, 2,324.30 and 1,292.76 is: 1,781.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.42 : 2,324.30 = 1,292.76 : x
  2. Step 2: Convert to fraction form
    1,686.42/2,324.30 = 1,292.76/x
  3. Step 3: Cross multiply
    1,686.42x = 2,324.30 × 1,292.76
  4. Step 4: Simplify right side
    1,686.42x = 3,004,755.60
  5. Step 5: Solve for x
    x = 3,004,755.60/1,686.42
  6. Step 6: Final answer
    x = 1,781.74

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1.5x scale

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.