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Finding the Fourth Proportional to 5,629.36, 8,392.73 and 5,485.58

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Solution

The fourth proportional to 5,629.36, 8,392.73 and 5,485.58 is: 8,178.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,629.36 : 8,392.73 = 5,485.58 : x
  2. Step 2: Convert to fraction form
    5,629.36/8,392.73 = 5,485.58/x
  3. Step 3: Cross multiply
    5,629.36x = 8,392.73 × 5,485.58
  4. Step 4: Simplify right side
    5,629.36x = 46,038,991.83
  5. Step 5: Solve for x
    x = 46,038,991.83/5,629.36
  6. Step 6: Final answer
    x = 8,178.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.