Home / 8,404.48-12,605.23-3,138.31

Finding the Fourth Proportional to 8,404.48, 12,605.23 and 3,138.31

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Solution

The fourth proportional to 8,404.48, 12,605.23 and 3,138.31 is: 4,706.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,404.48 : 12,605.23 = 3,138.31 : x
  2. Step 2: Convert to fraction form
    8,404.48/12,605.23 = 3,138.31/x
  3. Step 3: Cross multiply
    8,404.48x = 12,605.23 × 3,138.31
  4. Step 4: Simplify right side
    8,404.48x = 39,559,119.36
  5. Step 5: Solve for x
    x = 39,559,119.36/8,404.48
  6. Step 6: Final answer
    x = 4,706.91

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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.