Home / 5,619.30-8,416.80-4,890.30

Finding the Fourth Proportional to 5,619.30, 8,416.80 and 4,890.30

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Solution

The fourth proportional to 5,619.30, 8,416.80 and 4,890.30 is: 7,324.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.30 : 8,416.80 = 4,890.30 : x
  2. Step 2: Convert to fraction form
    5,619.30/8,416.80 = 4,890.30/x
  3. Step 3: Cross multiply
    5,619.30x = 8,416.80 × 4,890.30
  4. Step 4: Simplify right side
    5,619.30x = 41,160,677.04
  5. Step 5: Solve for x
    x = 41,160,677.04/5,619.30
  6. Step 6: Final answer
    x = 7,324.88

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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.