Home / 8,185.61-12,278.43-2,639.36

Finding the Fourth Proportional to 8,185.61, 12,278.43 and 2,639.36

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Solution

The fourth proportional to 8,185.61, 12,278.43 and 2,639.36 is: 3,959.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,185.61 : 12,278.43 = 2,639.36 : x
  2. Step 2: Convert to fraction form
    8,185.61/12,278.43 = 2,639.36/x
  3. Step 3: Cross multiply
    8,185.61x = 12,278.43 × 2,639.36
  4. Step 4: Simplify right side
    8,185.61x = 32,407,197.00
  5. Step 5: Solve for x
    x = 32,407,197.00/8,185.61
  6. Step 6: Final answer
    x = 3,959.04

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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.