Home / 2,285.97-3,154.29-1,291.23

Finding the Fourth Proportional to 2,285.97, 3,154.29 and 1,291.23

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Solution

The fourth proportional to 2,285.97, 3,154.29 and 1,291.23 is: 1,781.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.97 : 3,154.29 = 1,291.23 : x
  2. Step 2: Convert to fraction form
    2,285.97/3,154.29 = 1,291.23/x
  3. Step 3: Cross multiply
    2,285.97x = 3,154.29 × 1,291.23
  4. Step 4: Simplify right side
    2,285.97x = 4,072,913.88
  5. Step 5: Solve for x
    x = 4,072,913.88/2,285.97
  6. Step 6: Final answer
    x = 1,781.70

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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.