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Finding the Fourth Proportional to 7,057.63, 10,578.70 and 3,540.66

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Solution

The fourth proportional to 7,057.63, 10,578.70 and 3,540.66 is: 5,307.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,057.63 : 10,578.70 = 3,540.66 : x
  2. Step 2: Convert to fraction form
    7,057.63/10,578.70 = 3,540.66/x
  3. Step 3: Cross multiply
    7,057.63x = 10,578.70 × 3,540.66
  4. Step 4: Simplify right side
    7,057.63x = 37,455,604.20
  5. Step 5: Solve for x
    x = 37,455,604.20/7,057.63
  6. Step 6: Final answer
    x = 5,307.11

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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.