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Finding the Fourth Proportional to 1,714.29, 2,571.42 and 892.80

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Solution

The fourth proportional to 1,714.29, 2,571.42 and 892.80 is: 1,339.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,714.29 : 2,571.42 = 892.80 : x
  2. Step 2: Convert to fraction form
    1,714.29/2,571.42 = 892.80/x
  3. Step 3: Cross multiply
    1,714.29x = 2,571.42 × 892.80
  4. Step 4: Simplify right side
    1,714.29x = 2,295,763.78
  5. Step 5: Solve for x
    x = 2,295,763.78/1,714.29
  6. Step 6: Final answer
    x = 1,339.19

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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.