Home / 3,147.08-4,342.48-1,820.90

Finding the Fourth Proportional to 3,147.08, 4,342.48 and 1,820.90

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Solution

The fourth proportional to 3,147.08, 4,342.48 and 1,820.90 is: 2,512.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.08 : 4,342.48 = 1,820.90 : x
  2. Step 2: Convert to fraction form
    3,147.08/4,342.48 = 1,820.90/x
  3. Step 3: Cross multiply
    3,147.08x = 4,342.48 × 1,820.90
  4. Step 4: Simplify right side
    3,147.08x = 7,907,228.14
  5. Step 5: Solve for x
    x = 7,907,228.14/3,147.08
  6. Step 6: Final answer
    x = 2,512.56

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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.