Home / 4,230.40-6,342.38-3,307.90

Finding the Fourth Proportional to 4,230.40, 6,342.38 and 3,307.90

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Solution

The fourth proportional to 4,230.40, 6,342.38 and 3,307.90 is: 4,959.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,230.40 : 6,342.38 = 3,307.90 : x
  2. Step 2: Convert to fraction form
    4,230.40/6,342.38 = 3,307.90/x
  3. Step 3: Cross multiply
    4,230.40x = 6,342.38 × 3,307.90
  4. Step 4: Simplify right side
    4,230.40x = 20,979,958.80
  5. Step 5: Solve for x
    x = 20,979,958.80/4,230.40
  6. Step 6: Final answer
    x = 4,959.33

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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.