Home / 2,285.97-3,154.64-1,291.31

Finding the Fourth Proportional to 2,285.97, 3,154.64 and 1,291.31

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Solution

The fourth proportional to 2,285.97, 3,154.64 and 1,291.31 is: 1,782.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.97 : 3,154.64 = 1,291.31 : x
  2. Step 2: Convert to fraction form
    2,285.97/3,154.64 = 1,291.31/x
  3. Step 3: Cross multiply
    2,285.97x = 3,154.64 × 1,291.31
  4. Step 4: Simplify right side
    2,285.97x = 4,073,618.18
  5. Step 5: Solve for x
    x = 4,073,618.18/2,285.97
  6. Step 6: Final answer
    x = 1,782.01

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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.