Home / 7,537.29-10,400.90-4,179.78

Finding the Fourth Proportional to 7,537.29, 10,400.90 and 4,179.78

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Solution

The fourth proportional to 7,537.29, 10,400.90 and 4,179.78 is: 5,767.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,537.29 : 10,400.90 = 4,179.78 : x
  2. Step 2: Convert to fraction form
    7,537.29/10,400.90 = 4,179.78/x
  3. Step 3: Cross multiply
    7,537.29x = 10,400.90 × 4,179.78
  4. Step 4: Simplify right side
    7,537.29x = 43,473,452.90
  5. Step 5: Solve for x
    x = 43,473,452.90/7,537.29
  6. Step 6: Final answer
    x = 5,767.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.