Home / 2,577.15-3,865.66-1,785.74

Finding the Fourth Proportional to 2,577.15, 3,865.66 and 1,785.74

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Solution

The fourth proportional to 2,577.15, 3,865.66 and 1,785.74 is: 2,678.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.15 : 3,865.66 = 1,785.74 : x
  2. Step 2: Convert to fraction form
    2,577.15/3,865.66 = 1,785.74/x
  3. Step 3: Cross multiply
    2,577.15x = 3,865.66 × 1,785.74
  4. Step 4: Simplify right side
    2,577.15x = 6,903,039.90
  5. Step 5: Solve for x
    x = 6,903,039.90/2,577.15
  6. Step 6: Final answer
    x = 2,678.56

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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.