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Finding the Fourth Proportional to 7,898.58, 11,840.88 and 3,222.50

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Solution

The fourth proportional to 7,898.58, 11,840.88 and 3,222.50 is: 4,830.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,898.58 : 11,840.88 = 3,222.50 : x
  2. Step 2: Convert to fraction form
    7,898.58/11,840.88 = 3,222.50/x
  3. Step 3: Cross multiply
    7,898.58x = 11,840.88 × 3,222.50
  4. Step 4: Simplify right side
    7,898.58x = 38,157,255.28
  5. Step 5: Solve for x
    x = 38,157,255.28/7,898.58
  6. Step 6: Final answer
    x = 4,830.90

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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.