Home / 7,478.57-11,218.04-3,578.69

Finding the Fourth Proportional to 7,478.57, 11,218.04 and 3,578.69

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Solution

The fourth proportional to 7,478.57, 11,218.04 and 3,578.69 is: 5,368.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.57 : 11,218.04 = 3,578.69 : x
  2. Step 2: Convert to fraction form
    7,478.57/11,218.04 = 3,578.69/x
  3. Step 3: Cross multiply
    7,478.57x = 11,218.04 × 3,578.69
  4. Step 4: Simplify right side
    7,478.57x = 40,145,887.57
  5. Step 5: Solve for x
    x = 40,145,887.57/7,478.57
  6. Step 6: Final answer
    x = 5,368.12

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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.