Home / 3,145.52-4,720.71-2,219.09

Finding the Fourth Proportional to 3,145.52, 4,720.71 and 2,219.09

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Solution

The fourth proportional to 3,145.52, 4,720.71 and 2,219.09 is: 3,330.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.52 : 4,720.71 = 2,219.09 : x
  2. Step 2: Convert to fraction form
    3,145.52/4,720.71 = 2,219.09/x
  3. Step 3: Cross multiply
    3,145.52x = 4,720.71 × 2,219.09
  4. Step 4: Simplify right side
    3,145.52x = 10,475,656.75
  5. Step 5: Solve for x
    x = 10,475,656.75/3,145.52
  6. Step 6: Final answer
    x = 3,330.35

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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.