Home / 3,318.40-4,580.24-1,992.16

Finding the Fourth Proportional to 3,318.40, 4,580.24 and 1,992.16

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Solution

The fourth proportional to 3,318.40, 4,580.24 and 1,992.16 is: 2,749.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.40 : 4,580.24 = 1,992.16 : x
  2. Step 2: Convert to fraction form
    3,318.40/4,580.24 = 1,992.16/x
  3. Step 3: Cross multiply
    3,318.40x = 4,580.24 × 1,992.16
  4. Step 4: Simplify right side
    3,318.40x = 9,124,570.92
  5. Step 5: Solve for x
    x = 9,124,570.92/3,318.40
  6. Step 6: Final answer
    x = 2,749.69

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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.