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Finding the Fourth Proportional to 8,647.79, 12,971.93 and 2,408.27

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Solution

The fourth proportional to 8,647.79, 12,971.93 and 2,408.27 is: 3,612.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.79 : 12,971.93 = 2,408.27 : x
  2. Step 2: Convert to fraction form
    8,647.79/12,971.93 = 2,408.27/x
  3. Step 3: Cross multiply
    8,647.79x = 12,971.93 × 2,408.27
  4. Step 4: Simplify right side
    8,647.79x = 31,239,832.96
  5. Step 5: Solve for x
    x = 31,239,832.96/8,647.79
  6. Step 6: Final answer
    x = 3,612.47

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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.