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Finding the Fourth Proportional to 8,637.78, 12,956.62 and 3,704.22

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Solution

The fourth proportional to 8,637.78, 12,956.62 and 3,704.22 is: 5,556.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,637.78 : 12,956.62 = 3,704.22 : x
  2. Step 2: Convert to fraction form
    8,637.78/12,956.62 = 3,704.22/x
  3. Step 3: Cross multiply
    8,637.78x = 12,956.62 × 3,704.22
  4. Step 4: Simplify right side
    8,637.78x = 47,994,170.94
  5. Step 5: Solve for x
    x = 47,994,170.94/8,637.78
  6. Step 6: Final answer
    x = 5,556.31

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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.