Home / 8,905.21-13,352.87-3,643.91

Finding the Fourth Proportional to 8,905.21, 13,352.87 and 3,643.91

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Solution

The fourth proportional to 8,905.21, 13,352.87 and 3,643.91 is: 5,463.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.21 : 13,352.87 = 3,643.91 : x
  2. Step 2: Convert to fraction form
    8,905.21/13,352.87 = 3,643.91/x
  3. Step 3: Cross multiply
    8,905.21x = 13,352.87 × 3,643.91
  4. Step 4: Simplify right side
    8,905.21x = 48,656,589.76
  5. Step 5: Solve for x
    x = 48,656,589.76/8,905.21
  6. Step 6: Final answer
    x = 5,463.84

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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.