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Finding the Fourth Proportional to 2,483.16, 3,724.50 and 839.64

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Solution

The fourth proportional to 2,483.16, 3,724.50 and 839.64 is: 1,259.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,483.16 : 3,724.50 = 839.64 : x
  2. Step 2: Convert to fraction form
    2,483.16/3,724.50 = 839.64/x
  3. Step 3: Cross multiply
    2,483.16x = 3,724.50 × 839.64
  4. Step 4: Simplify right side
    2,483.16x = 3,127,239.18
  5. Step 5: Solve for x
    x = 3,127,239.18/2,483.16
  6. Step 6: Final answer
    x = 1,259.38

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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.