Home / 4,942.36-7,405.12-4,319.20

Finding the Fourth Proportional to 4,942.36, 7,405.12 and 4,319.20

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Solution

The fourth proportional to 4,942.36, 7,405.12 and 4,319.20 is: 6,471.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,942.36 : 7,405.12 = 4,319.20 : x
  2. Step 2: Convert to fraction form
    4,942.36/7,405.12 = 4,319.20/x
  3. Step 3: Cross multiply
    4,942.36x = 7,405.12 × 4,319.20
  4. Step 4: Simplify right side
    4,942.36x = 31,984,194.30
  5. Step 5: Solve for x
    x = 31,984,194.30/4,942.36
  6. Step 6: Final answer
    x = 6,471.44

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1.5x scale

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.