Home / 8,422.89-12,638.91-3,495.92

Finding the Fourth Proportional to 8,422.89, 12,638.91 and 3,495.92

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Solution

The fourth proportional to 8,422.89, 12,638.91 and 3,495.92 is: 5,245.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.89 : 12,638.91 = 3,495.92 : x
  2. Step 2: Convert to fraction form
    8,422.89/12,638.91 = 3,495.92/x
  3. Step 3: Cross multiply
    8,422.89x = 12,638.91 × 3,495.92
  4. Step 4: Simplify right side
    8,422.89x = 44,184,555.05
  5. Step 5: Solve for x
    x = 44,184,555.05/8,422.89
  6. Step 6: Final answer
    x = 5,245.77

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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.