Home / 3,121.39-4,682.40-1,477.54

Finding the Fourth Proportional to 3,121.39, 4,682.40 and 1,477.54

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Solution

The fourth proportional to 3,121.39, 4,682.40 and 1,477.54 is: 2,216.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.39 : 4,682.40 = 1,477.54 : x
  2. Step 2: Convert to fraction form
    3,121.39/4,682.40 = 1,477.54/x
  3. Step 3: Cross multiply
    3,121.39x = 4,682.40 × 1,477.54
  4. Step 4: Simplify right side
    3,121.39x = 6,918,433.30
  5. Step 5: Solve for x
    x = 6,918,433.30/3,121.39
  6. Step 6: Final answer
    x = 2,216.46

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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.