Home / 2,705.87-4,060.38-1,145.78

Finding the Fourth Proportional to 2,705.87, 4,060.38 and 1,145.78

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Solution

The fourth proportional to 2,705.87, 4,060.38 and 1,145.78 is: 1,719.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,705.87 : 4,060.38 = 1,145.78 : x
  2. Step 2: Convert to fraction form
    2,705.87/4,060.38 = 1,145.78/x
  3. Step 3: Cross multiply
    2,705.87x = 4,060.38 × 1,145.78
  4. Step 4: Simplify right side
    2,705.87x = 4,652,281.89
  5. Step 5: Solve for x
    x = 4,652,281.89/2,705.87
  6. Step 6: Final answer
    x = 1,719.33

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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.