Home / 5,384.02-8,079.21-2,918.78

Finding the Fourth Proportional to 5,384.02, 8,079.21 and 2,918.78

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Solution

The fourth proportional to 5,384.02, 8,079.21 and 2,918.78 is: 4,379.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,384.02 : 8,079.21 = 2,918.78 : x
  2. Step 2: Convert to fraction form
    5,384.02/8,079.21 = 2,918.78/x
  3. Step 3: Cross multiply
    5,384.02x = 8,079.21 × 2,918.78
  4. Step 4: Simplify right side
    5,384.02x = 23,581,436.56
  5. Step 5: Solve for x
    x = 23,581,436.56/5,384.02
  6. Step 6: Final answer
    x = 4,379.89

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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.