Home / 6,427.20-9,629.36-2,957.12

Finding the Fourth Proportional to 6,427.20, 9,629.36 and 2,957.12

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Solution

The fourth proportional to 6,427.20, 9,629.36 and 2,957.12 is: 4,430.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,427.20 : 9,629.36 = 2,957.12 : x
  2. Step 2: Convert to fraction form
    6,427.20/9,629.36 = 2,957.12/x
  3. Step 3: Cross multiply
    6,427.20x = 9,629.36 × 2,957.12
  4. Step 4: Simplify right side
    6,427.20x = 28,475,173.04
  5. Step 5: Solve for x
    x = 28,475,173.04/6,427.20
  6. Step 6: Final answer
    x = 4,430.42

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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.