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Finding the Fourth Proportional to 1,416.65, 2,125.78 and 801.05

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Solution

The fourth proportional to 1,416.65, 2,125.78 and 801.05 is: 1,202.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416.65 : 2,125.78 = 801.05 : x
  2. Step 2: Convert to fraction form
    1,416.65/2,125.78 = 801.05/x
  3. Step 3: Cross multiply
    1,416.65x = 2,125.78 × 801.05
  4. Step 4: Simplify right side
    1,416.65x = 1,702,843.44
  5. Step 5: Solve for x
    x = 1,702,843.44/1,416.65
  6. Step 6: Final answer
    x = 1,202.03

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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.