Home / 5,418.30-8,123.40-2,955.90

Finding the Fourth Proportional to 5,418.30, 8,123.40 and 2,955.90

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Solution

The fourth proportional to 5,418.30, 8,123.40 and 2,955.90 is: 4,431.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.30 : 8,123.40 = 2,955.90 : x
  2. Step 2: Convert to fraction form
    5,418.30/8,123.40 = 2,955.90/x
  3. Step 3: Cross multiply
    5,418.30x = 8,123.40 × 2,955.90
  4. Step 4: Simplify right side
    5,418.30x = 24,011,958.06
  5. Step 5: Solve for x
    x = 24,011,958.06/5,418.30
  6. Step 6: Final answer
    x = 4,431.64

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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.