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Finding the Fourth Proportional to 5,809.50, 8,714.14 and 1,427

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Solution

The fourth proportional to 5,809.50, 8,714.14 and 1,427 is: 2,140.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,809.50 : 8,714.14 = 1,427 : x
  2. Step 2: Convert to fraction form
    5,809.50/8,714.14 = 1,427/x
  3. Step 3: Cross multiply
    5,809.50x = 8,714.14 × 1,427
  4. Step 4: Simplify right side
    5,809.50x = 12,435,077.78
  5. Step 5: Solve for x
    x = 12,435,077.78/5,809.50
  6. Step 6: Final answer
    x = 2,140.47

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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.