Home / 2,290.20-3,160.55-1,295.64

Finding the Fourth Proportional to 2,290.20, 3,160.55 and 1,295.64

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Solution

The fourth proportional to 2,290.20, 3,160.55 and 1,295.64 is: 1,788.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.20 : 3,160.55 = 1,295.64 : x
  2. Step 2: Convert to fraction form
    2,290.20/3,160.55 = 1,295.64/x
  3. Step 3: Cross multiply
    2,290.20x = 3,160.55 × 1,295.64
  4. Step 4: Simplify right side
    2,290.20x = 4,094,935.00
  5. Step 5: Solve for x
    x = 4,094,935.00/2,290.20
  6. Step 6: Final answer
    x = 1,788.03

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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.