Home / 8,945.76-13,412.90-3,102.78

Finding the Fourth Proportional to 8,945.76, 13,412.90 and 3,102.78

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Solution

The fourth proportional to 8,945.76, 13,412.90 and 3,102.78 is: 4,652.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,945.76 : 13,412.90 = 3,102.78 : x
  2. Step 2: Convert to fraction form
    8,945.76/13,412.90 = 3,102.78/x
  3. Step 3: Cross multiply
    8,945.76x = 13,412.90 × 3,102.78
  4. Step 4: Simplify right side
    8,945.76x = 41,617,277.86
  5. Step 5: Solve for x
    x = 41,617,277.86/8,945.76
  6. Step 6: Final answer
    x = 4,652.18

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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.