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Finding the Fourth Proportional to 2,482.31, 3,723.80 and 839.32

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Solution

The fourth proportional to 2,482.31, 3,723.80 and 839.32 is: 1,259.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,482.31 : 3,723.80 = 839.32 : x
  2. Step 2: Convert to fraction form
    2,482.31/3,723.80 = 839.32/x
  3. Step 3: Cross multiply
    2,482.31x = 3,723.80 × 839.32
  4. Step 4: Simplify right side
    2,482.31x = 3,125,460.27
  5. Step 5: Solve for x
    x = 3,125,460.27/2,482.31
  6. Step 6: Final answer
    x = 1,259.10

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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.