Home / 8,215.86-12,325.60-2,669.79

Finding the Fourth Proportional to 8,215.86, 12,325.60 and 2,669.79

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Solution

The fourth proportional to 8,215.86, 12,325.60 and 2,669.79 is: 4,005.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.86 : 12,325.60 = 2,669.79 : x
  2. Step 2: Convert to fraction form
    8,215.86/12,325.60 = 2,669.79/x
  3. Step 3: Cross multiply
    8,215.86x = 12,325.60 × 2,669.79
  4. Step 4: Simplify right side
    8,215.86x = 32,906,787.76
  5. Step 5: Solve for x
    x = 32,906,787.76/8,215.86
  6. Step 6: Final answer
    x = 4,005.27

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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.