Home / 7,428.03-11,145.71-3,479.56

Finding the Fourth Proportional to 7,428.03, 11,145.71 and 3,479.56

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Solution

The fourth proportional to 7,428.03, 11,145.71 and 3,479.56 is: 5,221.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.03 : 11,145.71 = 3,479.56 : x
  2. Step 2: Convert to fraction form
    7,428.03/11,145.71 = 3,479.56/x
  3. Step 3: Cross multiply
    7,428.03x = 11,145.71 × 3,479.56
  4. Step 4: Simplify right side
    7,428.03x = 38,782,189.32
  5. Step 5: Solve for x
    x = 38,782,189.32/7,428.03
  6. Step 6: Final answer
    x = 5,221.06

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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.