Home / 8,408.85-12,615.09-2,565.28

Finding the Fourth Proportional to 8,408.85, 12,615.09 and 2,565.28

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Solution

The fourth proportional to 8,408.85, 12,615.09 and 2,565.28 is: 3,848.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,408.85 : 12,615.09 = 2,565.28 : x
  2. Step 2: Convert to fraction form
    8,408.85/12,615.09 = 2,565.28/x
  3. Step 3: Cross multiply
    8,408.85x = 12,615.09 × 2,565.28
  4. Step 4: Simplify right side
    8,408.85x = 32,361,238.08
  5. Step 5: Solve for x
    x = 32,361,238.08/8,408.85
  6. Step 6: Final answer
    x = 3,848.47

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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.