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Finding the Fourth Proportional to 1,460.12, 2,014.98 and 839

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Solution

The fourth proportional to 1,460.12, 2,014.98 and 839 is: 1,157.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,460.12 : 2,014.98 = 839 : x
  2. Step 2: Convert to fraction form
    1,460.12/2,014.98 = 839/x
  3. Step 3: Cross multiply
    1,460.12x = 2,014.98 × 839
  4. Step 4: Simplify right side
    1,460.12x = 1,690,568.22
  5. Step 5: Solve for x
    x = 1,690,568.22/1,460.12
  6. Step 6: Final answer
    x = 1,157.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.