Home / 3,127.02-4,686.89-1,392

Finding the Fourth Proportional to 3,127.02, 4,686.89 and 1,392

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Solution

The fourth proportional to 3,127.02, 4,686.89 and 1,392 is: 2,086.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.02 : 4,686.89 = 1,392 : x
  2. Step 2: Convert to fraction form
    3,127.02/4,686.89 = 1,392/x
  3. Step 3: Cross multiply
    3,127.02x = 4,686.89 × 1,392
  4. Step 4: Simplify right side
    3,127.02x = 6,524,143.92
  5. Step 5: Solve for x
    x = 6,524,143.92/3,127.02
  6. Step 6: Final answer
    x = 2,086.38

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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.