Home / 2,340.78-3,230.12-1,292.86

Finding the Fourth Proportional to 2,340.78, 3,230.12 and 1,292.86

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Solution

The fourth proportional to 2,340.78, 3,230.12 and 1,292.86 is: 1,784.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,340.78 : 3,230.12 = 1,292.86 : x
  2. Step 2: Convert to fraction form
    2,340.78/3,230.12 = 1,292.86/x
  3. Step 3: Cross multiply
    2,340.78x = 3,230.12 × 1,292.86
  4. Step 4: Simplify right side
    2,340.78x = 4,176,092.94
  5. Step 5: Solve for x
    x = 4,176,092.94/2,340.78
  6. Step 6: Final answer
    x = 1,784.06

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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.