Home / 10,252.80-15,379.20-2,857.28

Finding the Fourth Proportional to 10,252.80, 15,379.20 and 2,857.28

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Solution

The fourth proportional to 10,252.80, 15,379.20 and 2,857.28 is: 4,285.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,252.80 : 15,379.20 = 2,857.28 : x
  2. Step 2: Convert to fraction form
    10,252.80/15,379.20 = 2,857.28/x
  3. Step 3: Cross multiply
    10,252.80x = 15,379.20 × 2,857.28
  4. Step 4: Simplify right side
    10,252.80x = 43,942,603.68
  5. Step 5: Solve for x
    x = 43,942,603.68/10,252.80
  6. Step 6: Final answer
    x = 4,285.91

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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.