Home / 8,389.19-12,572.85-3,453.86

Finding the Fourth Proportional to 8,389.19, 12,572.85 and 3,453.86

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Solution

The fourth proportional to 8,389.19, 12,572.85 and 3,453.86 is: 5,176.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.19 : 12,572.85 = 3,453.86 : x
  2. Step 2: Convert to fraction form
    8,389.19/12,572.85 = 3,453.86/x
  3. Step 3: Cross multiply
    8,389.19x = 12,572.85 × 3,453.86
  4. Step 4: Simplify right side
    8,389.19x = 43,424,908.09
  5. Step 5: Solve for x
    x = 43,424,908.09/8,389.19
  6. Step 6: Final answer
    x = 5,176.29

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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.