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Finding the Fourth Proportional to 8,603.30, 12,905.62 and 3,672.98

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Solution

The fourth proportional to 8,603.30, 12,905.62 and 3,672.98 is: 5,509.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.30 : 12,905.62 = 3,672.98 : x
  2. Step 2: Convert to fraction form
    8,603.30/12,905.62 = 3,672.98/x
  3. Step 3: Cross multiply
    8,603.30x = 12,905.62 × 3,672.98
  4. Step 4: Simplify right side
    8,603.30x = 47,402,084.15
  5. Step 5: Solve for x
    x = 47,402,084.15/8,603.30
  6. Step 6: Final answer
    x = 5,509.76

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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.