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Finding the Fourth Proportional to 8,610.54, 12,905.01 and 3,674.40

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Solution

The fourth proportional to 8,610.54, 12,905.01 and 3,674.40 is: 5,506.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.54 : 12,905.01 = 3,674.40 : x
  2. Step 2: Convert to fraction form
    8,610.54/12,905.01 = 3,674.40/x
  3. Step 3: Cross multiply
    8,610.54x = 12,905.01 × 3,674.40
  4. Step 4: Simplify right side
    8,610.54x = 47,418,168.74
  5. Step 5: Solve for x
    x = 47,418,168.74/8,610.54
  6. Step 6: Final answer
    x = 5,506.99

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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.