Home / 3,480.11-5,222.53-1,288.86

Finding the Fourth Proportional to 3,480.11, 5,222.53 and 1,288.86

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Solution

The fourth proportional to 3,480.11, 5,222.53 and 1,288.86 is: 1,934.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.11 : 5,222.53 = 1,288.86 : x
  2. Step 2: Convert to fraction form
    3,480.11/5,222.53 = 1,288.86/x
  3. Step 3: Cross multiply
    3,480.11x = 5,222.53 × 1,288.86
  4. Step 4: Simplify right side
    3,480.11x = 6,731,114.17
  5. Step 5: Solve for x
    x = 6,731,114.17/3,480.11
  6. Step 6: Final answer
    x = 1,934.16

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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.