Home / 8,142.85-12,215.09-2,521.86

Finding the Fourth Proportional to 8,142.85, 12,215.09 and 2,521.86

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Solution

The fourth proportional to 8,142.85, 12,215.09 and 2,521.86 is: 3,783.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142.85 : 12,215.09 = 2,521.86 : x
  2. Step 2: Convert to fraction form
    8,142.85/12,215.09 = 2,521.86/x
  3. Step 3: Cross multiply
    8,142.85x = 12,215.09 × 2,521.86
  4. Step 4: Simplify right side
    8,142.85x = 30,804,746.87
  5. Step 5: Solve for x
    x = 30,804,746.87/8,142.85
  6. Step 6: Final answer
    x = 3,783.04

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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.