Home / 2,938.40-4,406.64-1,089.44

Finding the Fourth Proportional to 2,938.40, 4,406.64 and 1,089.44

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Solution

The fourth proportional to 2,938.40, 4,406.64 and 1,089.44 is: 1,633.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.40 : 4,406.64 = 1,089.44 : x
  2. Step 2: Convert to fraction form
    2,938.40/4,406.64 = 1,089.44/x
  3. Step 3: Cross multiply
    2,938.40x = 4,406.64 × 1,089.44
  4. Step 4: Simplify right side
    2,938.40x = 4,800,769.88
  5. Step 5: Solve for x
    x = 4,800,769.88/2,938.40
  6. Step 6: Final answer
    x = 1,633.80

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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.