Home / 10,252.90-15,378.89-2,857.19

Finding the Fourth Proportional to 10,252.90, 15,378.89 and 2,857.19

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Solution

The fourth proportional to 10,252.90, 15,378.89 and 2,857.19 is: 4,285.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,252.90 : 15,378.89 = 2,857.19 : x
  2. Step 2: Convert to fraction form
    10,252.90/15,378.89 = 2,857.19/x
  3. Step 3: Cross multiply
    10,252.90x = 15,378.89 × 2,857.19
  4. Step 4: Simplify right side
    10,252.90x = 43,940,434.88
  5. Step 5: Solve for x
    x = 43,940,434.88/10,252.90
  6. Step 6: Final answer
    x = 4,285.66

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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.