Home / 3,147.26-4,342.41-1,820.48

Finding the Fourth Proportional to 3,147.26, 4,342.41 and 1,820.48

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Solution

The fourth proportional to 3,147.26, 4,342.41 and 1,820.48 is: 2,511.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.26 : 4,342.41 = 1,820.48 : x
  2. Step 2: Convert to fraction form
    3,147.26/4,342.41 = 1,820.48/x
  3. Step 3: Cross multiply
    3,147.26x = 4,342.41 × 1,820.48
  4. Step 4: Simplify right side
    3,147.26x = 7,905,248.84
  5. Step 5: Solve for x
    x = 7,905,248.84/3,147.26
  6. Step 6: Final answer
    x = 2,511.79

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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.