Home / 8,287.19-12,428.98-2,739.22

Finding the Fourth Proportional to 8,287.19, 12,428.98 and 2,739.22

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Solution

The fourth proportional to 8,287.19, 12,428.98 and 2,739.22 is: 4,108.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,287.19 : 12,428.98 = 2,739.22 : x
  2. Step 2: Convert to fraction form
    8,287.19/12,428.98 = 2,739.22/x
  3. Step 3: Cross multiply
    8,287.19x = 12,428.98 × 2,739.22
  4. Step 4: Simplify right side
    8,287.19x = 34,045,710.60
  5. Step 5: Solve for x
    x = 34,045,710.60/8,287.19
  6. Step 6: Final answer
    x = 4,108.23

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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.