Home / 1,556.56-2,147.16-935.20

Finding the Fourth Proportional to 1,556.56, 2,147.16 and 935.20

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Solution

The fourth proportional to 1,556.56, 2,147.16 and 935.20 is: 1,290.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.56 : 2,147.16 = 935.20 : x
  2. Step 2: Convert to fraction form
    1,556.56/2,147.16 = 935.20/x
  3. Step 3: Cross multiply
    1,556.56x = 2,147.16 × 935.20
  4. Step 4: Simplify right side
    1,556.56x = 2,008,024.03
  5. Step 5: Solve for x
    x = 2,008,024.03/1,556.56
  6. Step 6: Final answer
    x = 1,290.04

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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.