Home / 3,421.45-5,132.18-1,228.60

Finding the Fourth Proportional to 3,421.45, 5,132.18 and 1,228.60

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Solution

The fourth proportional to 3,421.45, 5,132.18 and 1,228.60 is: 1,842.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.45 : 5,132.18 = 1,228.60 : x
  2. Step 2: Convert to fraction form
    3,421.45/5,132.18 = 1,228.60/x
  3. Step 3: Cross multiply
    3,421.45x = 5,132.18 × 1,228.60
  4. Step 4: Simplify right side
    3,421.45x = 6,305,405.83
  5. Step 5: Solve for x
    x = 6,305,405.83/3,421.45
  6. Step 6: Final answer
    x = 1,842.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.