Home / 3,120.48-4,684.81-2,431.58

Finding the Fourth Proportional to 3,120.48, 4,684.81 and 2,431.58

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Solution

The fourth proportional to 3,120.48, 4,684.81 and 2,431.58 is: 3,650.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.48 : 4,684.81 = 2,431.58 : x
  2. Step 2: Convert to fraction form
    3,120.48/4,684.81 = 2,431.58/x
  3. Step 3: Cross multiply
    3,120.48x = 4,684.81 × 2,431.58
  4. Step 4: Simplify right side
    3,120.48x = 11,391,490.30
  5. Step 5: Solve for x
    x = 11,391,490.30/3,120.48
  6. Step 6: Final answer
    x = 3,650.56

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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.