Home / 1,556.55-2,147.97-927.15

Finding the Fourth Proportional to 1,556.55, 2,147.97 and 927.15

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Solution

The fourth proportional to 1,556.55, 2,147.97 and 927.15 is: 1,279.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.55 : 2,147.97 = 927.15 : x
  2. Step 2: Convert to fraction form
    1,556.55/2,147.97 = 927.15/x
  3. Step 3: Cross multiply
    1,556.55x = 2,147.97 × 927.15
  4. Step 4: Simplify right side
    1,556.55x = 1,991,490.39
  5. Step 5: Solve for x
    x = 1,991,490.39/1,556.55
  6. Step 6: Final answer
    x = 1,279.43

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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.