Home / 7,429.43-11,137.97-3,478.75

Finding the Fourth Proportional to 7,429.43, 11,137.97 and 3,478.75

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Solution

The fourth proportional to 7,429.43, 11,137.97 and 3,478.75 is: 5,215.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,429.43 : 11,137.97 = 3,478.75 : x
  2. Step 2: Convert to fraction form
    7,429.43/11,137.97 = 3,478.75/x
  3. Step 3: Cross multiply
    7,429.43x = 11,137.97 × 3,478.75
  4. Step 4: Simplify right side
    7,429.43x = 38,746,193.99
  5. Step 5: Solve for x
    x = 38,746,193.99/7,429.43
  6. Step 6: Final answer
    x = 5,215.23

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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.