Home / 3,318.40-4,977.72-1,127.36

Finding the Fourth Proportional to 3,318.40, 4,977.72 and 1,127.36

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Solution

The fourth proportional to 3,318.40, 4,977.72 and 1,127.36 is: 1,691.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.40 : 4,977.72 = 1,127.36 : x
  2. Step 2: Convert to fraction form
    3,318.40/4,977.72 = 1,127.36/x
  3. Step 3: Cross multiply
    3,318.40x = 4,977.72 × 1,127.36
  4. Step 4: Simplify right side
    3,318.40x = 5,611,682.42
  5. Step 5: Solve for x
    x = 5,611,682.42/3,318.40
  6. Step 6: Final answer
    x = 1,691.08

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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.