Home / 6,421.10-9,631-3,136.46

Finding the Fourth Proportional to 6,421.10, 9,631 and 3,136.46

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Solution

The fourth proportional to 6,421.10, 9,631 and 3,136.46 is: 4,704.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.10 : 9,631 = 3,136.46 : x
  2. Step 2: Convert to fraction form
    6,421.10/9,631 = 3,136.46/x
  3. Step 3: Cross multiply
    6,421.10x = 9,631 × 3,136.46
  4. Step 4: Simplify right side
    6,421.10x = 30,207,246.26
  5. Step 5: Solve for x
    x = 30,207,246.26/6,421.10
  6. Step 6: Final answer
    x = 4,704.37

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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.