Home / 3,318.12-4,579.42-2,142.60

Finding the Fourth Proportional to 3,318.12, 4,579.42 and 2,142.60

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Solution

The fourth proportional to 3,318.12, 4,579.42 and 2,142.60 is: 2,957.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.12 : 4,579.42 = 2,142.60 : x
  2. Step 2: Convert to fraction form
    3,318.12/4,579.42 = 2,142.60/x
  3. Step 3: Cross multiply
    3,318.12x = 4,579.42 × 2,142.60
  4. Step 4: Simplify right side
    3,318.12x = 9,811,865.29
  5. Step 5: Solve for x
    x = 9,811,865.29/3,318.12
  6. Step 6: Final answer
    x = 2,957.06

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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.