Home / 5,371.02-8,056.80-1,861.20

Finding the Fourth Proportional to 5,371.02, 8,056.80 and 1,861.20

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Solution

The fourth proportional to 5,371.02, 8,056.80 and 1,861.20 is: 2,791.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,371.02 : 8,056.80 = 1,861.20 : x
  2. Step 2: Convert to fraction form
    5,371.02/8,056.80 = 1,861.20/x
  3. Step 3: Cross multiply
    5,371.02x = 8,056.80 × 1,861.20
  4. Step 4: Simplify right side
    5,371.02x = 14,995,316.16
  5. Step 5: Solve for x
    x = 14,995,316.16/5,371.02
  6. Step 6: Final answer
    x = 2,791.89

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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.