Home / 8,426.37-12,639.86-3,160.85

Finding the Fourth Proportional to 8,426.37, 12,639.86 and 3,160.85

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Solution

The fourth proportional to 8,426.37, 12,639.86 and 3,160.85 is: 4,741.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,426.37 : 12,639.86 = 3,160.85 : x
  2. Step 2: Convert to fraction form
    8,426.37/12,639.86 = 3,160.85/x
  3. Step 3: Cross multiply
    8,426.37x = 12,639.86 × 3,160.85
  4. Step 4: Simplify right side
    8,426.37x = 39,952,622.48
  5. Step 5: Solve for x
    x = 39,952,622.48/8,426.37
  6. Step 6: Final answer
    x = 4,741.38

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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.