Home / 3,127.02-4,688.80-1,279.43

Finding the Fourth Proportional to 3,127.02, 4,688.80 and 1,279.43

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Solution

The fourth proportional to 3,127.02, 4,688.80 and 1,279.43 is: 1,918.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.02 : 4,688.80 = 1,279.43 : x
  2. Step 2: Convert to fraction form
    3,127.02/4,688.80 = 1,279.43/x
  3. Step 3: Cross multiply
    3,127.02x = 4,688.80 × 1,279.43
  4. Step 4: Simplify right side
    3,127.02x = 5,998,991.38
  5. Step 5: Solve for x
    x = 5,998,991.38/3,127.02
  6. Step 6: Final answer
    x = 1,918.44

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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.