Home / 7,404.40-11,128.20-7,274.80

Finding the Fourth Proportional to 7,404.40, 11,128.20 and 7,274.80

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Solution

The fourth proportional to 7,404.40, 11,128.20 and 7,274.80 is: 10,933.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,404.40 : 11,128.20 = 7,274.80 : x
  2. Step 2: Convert to fraction form
    7,404.40/11,128.20 = 7,274.80/x
  3. Step 3: Cross multiply
    7,404.40x = 11,128.20 × 7,274.80
  4. Step 4: Simplify right side
    7,404.40x = 80,955,429.36
  5. Step 5: Solve for x
    x = 80,955,429.36/7,404.40
  6. Step 6: Final answer
    x = 10,933.42

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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.