Home / 5,379.02-8,061.56-2,415.28

Finding the Fourth Proportional to 5,379.02, 8,061.56 and 2,415.28

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Solution

The fourth proportional to 5,379.02, 8,061.56 and 2,415.28 is: 3,619.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,379.02 : 8,061.56 = 2,415.28 : x
  2. Step 2: Convert to fraction form
    5,379.02/8,061.56 = 2,415.28/x
  3. Step 3: Cross multiply
    5,379.02x = 8,061.56 × 2,415.28
  4. Step 4: Simplify right side
    5,379.02x = 19,470,872.25
  5. Step 5: Solve for x
    x = 19,470,872.25/5,379.02
  6. Step 6: Final answer
    x = 3,619.78

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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.