Home / 2,639.10-3,961.62-1,665.75

Finding the Fourth Proportional to 2,639.10, 3,961.62 and 1,665.75

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Solution

The fourth proportional to 2,639.10, 3,961.62 and 1,665.75 is: 2,500.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.10 : 3,961.62 = 1,665.75 : x
  2. Step 2: Convert to fraction form
    2,639.10/3,961.62 = 1,665.75/x
  3. Step 3: Cross multiply
    2,639.10x = 3,961.62 × 1,665.75
  4. Step 4: Simplify right side
    2,639.10x = 6,599,068.52
  5. Step 5: Solve for x
    x = 6,599,068.52/2,639.10
  6. Step 6: Final answer
    x = 2,500.50

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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.