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Finding the Fourth Proportional to 5,424.24, 7,485.48 and 2,940.24

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Solution

The fourth proportional to 5,424.24, 7,485.48 and 2,940.24 is: 4,057.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,424.24 : 7,485.48 = 2,940.24 : x
  2. Step 2: Convert to fraction form
    5,424.24/7,485.48 = 2,940.24/x
  3. Step 3: Cross multiply
    5,424.24x = 7,485.48 × 2,940.24
  4. Step 4: Simplify right side
    5,424.24x = 22,009,107.72
  5. Step 5: Solve for x
    x = 22,009,107.72/5,424.24
  6. Step 6: Final answer
    x = 4,057.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.