Home / 3,230.10-4,431.90-3,147.18

Finding the Fourth Proportional to 3,230.10, 4,431.90 and 3,147.18

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Solution

The fourth proportional to 3,230.10, 4,431.90 and 3,147.18 is: 4,318.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,230.10 : 4,431.90 = 3,147.18 : x
  2. Step 2: Convert to fraction form
    3,230.10/4,431.90 = 3,147.18/x
  3. Step 3: Cross multiply
    3,230.10x = 4,431.90 × 3,147.18
  4. Step 4: Simplify right side
    3,230.10x = 13,947,987.04
  5. Step 5: Solve for x
    x = 13,947,987.04/3,230.10
  6. Step 6: Final answer
    x = 4,318.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.