Home / 1,556.20-2,146.80-996.22

Finding the Fourth Proportional to 1,556.20, 2,146.80 and 996.22

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Solution

The fourth proportional to 1,556.20, 2,146.80 and 996.22 is: 1,374.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.20 : 2,146.80 = 996.22 : x
  2. Step 2: Convert to fraction form
    1,556.20/2,146.80 = 996.22/x
  3. Step 3: Cross multiply
    1,556.20x = 2,146.80 × 996.22
  4. Step 4: Simplify right side
    1,556.20x = 2,138,685.10
  5. Step 5: Solve for x
    x = 2,138,685.10/1,556.20
  6. Step 6: Final answer
    x = 1,374.30

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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.