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Finding the Fourth Proportional to 2,415.24, 3,623.42 and 855.25

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Solution

The fourth proportional to 2,415.24, 3,623.42 and 855.25 is: 1,283.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.24 : 3,623.42 = 855.25 : x
  2. Step 2: Convert to fraction form
    2,415.24/3,623.42 = 855.25/x
  3. Step 3: Cross multiply
    2,415.24x = 3,623.42 × 855.25
  4. Step 4: Simplify right side
    2,415.24x = 3,098,929.96
  5. Step 5: Solve for x
    x = 3,098,929.96/2,415.24
  6. Step 6: Final answer
    x = 1,283.07

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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.