Home / 2,015.88-3,025.12-861.64

Finding the Fourth Proportional to 2,015.88, 3,025.12 and 861.64

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Solution

The fourth proportional to 2,015.88, 3,025.12 and 861.64 is: 1,293.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.88 : 3,025.12 = 861.64 : x
  2. Step 2: Convert to fraction form
    2,015.88/3,025.12 = 861.64/x
  3. Step 3: Cross multiply
    2,015.88x = 3,025.12 × 861.64
  4. Step 4: Simplify right side
    2,015.88x = 2,606,564.40
  5. Step 5: Solve for x
    x = 2,606,564.40/2,015.88
  6. Step 6: Final answer
    x = 1,293.02

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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.