Home / 8,133.72-12,187.80-6,289.35

Finding the Fourth Proportional to 8,133.72, 12,187.80 and 6,289.35

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Solution

The fourth proportional to 8,133.72, 12,187.80 and 6,289.35 is: 9,424.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,133.72 : 12,187.80 = 6,289.35 : x
  2. Step 2: Convert to fraction form
    8,133.72/12,187.80 = 6,289.35/x
  3. Step 3: Cross multiply
    8,133.72x = 12,187.80 × 6,289.35
  4. Step 4: Simplify right side
    8,133.72x = 76,653,339.93
  5. Step 5: Solve for x
    x = 76,653,339.93/8,133.72
  6. Step 6: Final answer
    x = 9,424.14

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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.