Home / 2,651.37-3,970.65-1,330.97

Finding the Fourth Proportional to 2,651.37, 3,970.65 and 1,330.97

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Solution

The fourth proportional to 2,651.37, 3,970.65 and 1,330.97 is: 1,993.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651.37 : 3,970.65 = 1,330.97 : x
  2. Step 2: Convert to fraction form
    2,651.37/3,970.65 = 1,330.97/x
  3. Step 3: Cross multiply
    2,651.37x = 3,970.65 × 1,330.97
  4. Step 4: Simplify right side
    2,651.37x = 5,284,801.17
  5. Step 5: Solve for x
    x = 5,284,801.17/2,651.37
  6. Step 6: Final answer
    x = 1,993.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.