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Finding the Fourth Proportional to 7,898.58, 11,851.86 and 4,388.70

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Solution

The fourth proportional to 7,898.58, 11,851.86 and 4,388.70 is: 6,585.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,898.58 : 11,851.86 = 4,388.70 : x
  2. Step 2: Convert to fraction form
    7,898.58/11,851.86 = 4,388.70/x
  3. Step 3: Cross multiply
    7,898.58x = 11,851.86 × 4,388.70
  4. Step 4: Simplify right side
    7,898.58x = 52,014,257.98
  5. Step 5: Solve for x
    x = 52,014,257.98/7,898.58
  6. Step 6: Final answer
    x = 6,585.27

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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.