Home / 9,828.20-14,744.10-3,985.40

Finding the Fourth Proportional to 9,828.20, 14,744.10 and 3,985.40

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Solution

The fourth proportional to 9,828.20, 14,744.10 and 3,985.40 is: 5,978.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,828.20 : 14,744.10 = 3,985.40 : x
  2. Step 2: Convert to fraction form
    9,828.20/14,744.10 = 3,985.40/x
  3. Step 3: Cross multiply
    9,828.20x = 14,744.10 × 3,985.40
  4. Step 4: Simplify right side
    9,828.20x = 58,761,136.14
  5. Step 5: Solve for x
    x = 58,761,136.14/9,828.20
  6. Step 6: Final answer
    x = 5,978.83

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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.