Home / 7,478.07-11,217.29-3,578.19

Finding the Fourth Proportional to 7,478.07, 11,217.29 and 3,578.19

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Solution

The fourth proportional to 7,478.07, 11,217.29 and 3,578.19 is: 5,367.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.07 : 11,217.29 = 3,578.19 : x
  2. Step 2: Convert to fraction form
    7,478.07/11,217.29 = 3,578.19/x
  3. Step 3: Cross multiply
    7,478.07x = 11,217.29 × 3,578.19
  4. Step 4: Simplify right side
    7,478.07x = 40,137,577.01
  5. Step 5: Solve for x
    x = 40,137,577.01/7,478.07
  6. Step 6: Final answer
    x = 5,367.37

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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.