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Finding the Fourth Proportional to 6,714.72, 9,264.96 and 3,919.68

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Solution

The fourth proportional to 6,714.72, 9,264.96 and 3,919.68 is: 5,408.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,714.72 : 9,264.96 = 3,919.68 : x
  2. Step 2: Convert to fraction form
    6,714.72/9,264.96 = 3,919.68/x
  3. Step 3: Cross multiply
    6,714.72x = 9,264.96 × 3,919.68
  4. Step 4: Simplify right side
    6,714.72x = 36,315,678.41
  5. Step 5: Solve for x
    x = 36,315,678.41/6,714.72
  6. Step 6: Final answer
    x = 5,408.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.