Home / 2,619.12-3,612.88-1,556.56

Finding the Fourth Proportional to 2,619.12, 3,612.88 and 1,556.56

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Solution

The fourth proportional to 2,619.12, 3,612.88 and 1,556.56 is: 2,147.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.12 : 3,612.88 = 1,556.56 : x
  2. Step 2: Convert to fraction form
    2,619.12/3,612.88 = 1,556.56/x
  3. Step 3: Cross multiply
    2,619.12x = 3,612.88 × 1,556.56
  4. Step 4: Simplify right side
    2,619.12x = 5,623,664.49
  5. Step 5: Solve for x
    x = 5,623,664.49/2,619.12
  6. Step 6: Final answer
    x = 2,147.16

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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.