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Finding the Fourth Proportional to 2,539.22, 3,808.01 and 784.15

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Solution

The fourth proportional to 2,539.22, 3,808.01 and 784.15 is: 1,175.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,539.22 : 3,808.01 = 784.15 : x
  2. Step 2: Convert to fraction form
    2,539.22/3,808.01 = 784.15/x
  3. Step 3: Cross multiply
    2,539.22x = 3,808.01 × 784.15
  4. Step 4: Simplify right side
    2,539.22x = 2,986,043.48
  5. Step 5: Solve for x
    x = 2,986,043.48/2,539.22
  6. Step 6: Final answer
    x = 1,175.97

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1.5x scale

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.