Home / 8,428.08-12,644.63-3,747.45

Finding the Fourth Proportional to 8,428.08, 12,644.63 and 3,747.45

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Solution

The fourth proportional to 8,428.08, 12,644.63 and 3,747.45 is: 5,622.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.08 : 12,644.63 = 3,747.45 : x
  2. Step 2: Convert to fraction form
    8,428.08/12,644.63 = 3,747.45/x
  3. Step 3: Cross multiply
    8,428.08x = 12,644.63 × 3,747.45
  4. Step 4: Simplify right side
    8,428.08x = 47,385,100.84
  5. Step 5: Solve for x
    x = 47,385,100.84/8,428.08
  6. Step 6: Final answer
    x = 5,622.29

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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.