Home / 5,381.02-8,072.61-1,918.18

Finding the Fourth Proportional to 5,381.02, 8,072.61 and 1,918.18

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Solution

The fourth proportional to 5,381.02, 8,072.61 and 1,918.18 is: 2,877.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.02 : 8,072.61 = 1,918.18 : x
  2. Step 2: Convert to fraction form
    5,381.02/8,072.61 = 1,918.18/x
  3. Step 3: Cross multiply
    5,381.02x = 8,072.61 × 1,918.18
  4. Step 4: Simplify right side
    5,381.02x = 15,484,719.05
  5. Step 5: Solve for x
    x = 15,484,719.05/5,381.02
  6. Step 6: Final answer
    x = 2,877.65

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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.