Home / 8,429.30-12,637.08-3,161.35

Finding the Fourth Proportional to 8,429.30, 12,637.08 and 3,161.35

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Solution

The fourth proportional to 8,429.30, 12,637.08 and 3,161.35 is: 4,739.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,429.30 : 12,637.08 = 3,161.35 : x
  2. Step 2: Convert to fraction form
    8,429.30/12,637.08 = 3,161.35/x
  3. Step 3: Cross multiply
    8,429.30x = 12,637.08 × 3,161.35
  4. Step 4: Simplify right side
    8,429.30x = 39,950,201.27
  5. Step 5: Solve for x
    x = 39,950,201.27/8,429.30
  6. Step 6: Final answer
    x = 4,739.45

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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.