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Finding the Fourth Proportional to 8,927.79, 13,389.86 and 3,379.22

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Solution

The fourth proportional to 8,927.79, 13,389.86 and 3,379.22 is: 5,068.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,927.79 : 13,389.86 = 3,379.22 : x
  2. Step 2: Convert to fraction form
    8,927.79/13,389.86 = 3,379.22/x
  3. Step 3: Cross multiply
    8,927.79x = 13,389.86 × 3,379.22
  4. Step 4: Simplify right side
    8,927.79x = 45,247,324.63
  5. Step 5: Solve for x
    x = 45,247,324.63/8,927.79
  6. Step 6: Final answer
    x = 5,068.14

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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.