Home / 2,345.21-3,517.70-786.29

Finding the Fourth Proportional to 2,345.21, 3,517.70 and 786.29

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Solution

The fourth proportional to 2,345.21, 3,517.70 and 786.29 is: 1,179.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,345.21 : 3,517.70 = 786.29 : x
  2. Step 2: Convert to fraction form
    2,345.21/3,517.70 = 786.29/x
  3. Step 3: Cross multiply
    2,345.21x = 3,517.70 × 786.29
  4. Step 4: Simplify right side
    2,345.21x = 2,765,932.33
  5. Step 5: Solve for x
    x = 2,765,932.33/2,345.21
  6. Step 6: Final answer
    x = 1,179.40

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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.