Home / 2,539.89-3,809.81-1,307.64

Finding the Fourth Proportional to 2,539.89, 3,809.81 and 1,307.64

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Solution

The fourth proportional to 2,539.89, 3,809.81 and 1,307.64 is: 1,961.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,539.89 : 3,809.81 = 1,307.64 : x
  2. Step 2: Convert to fraction form
    2,539.89/3,809.81 = 1,307.64/x
  3. Step 3: Cross multiply
    2,539.89x = 3,809.81 × 1,307.64
  4. Step 4: Simplify right side
    2,539.89x = 4,981,853.41
  5. Step 5: Solve for x
    x = 4,981,853.41/2,539.89
  6. Step 6: Final answer
    x = 1,961.44

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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.