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Finding the Fourth Proportional to 4,739.72, 7,110.54 and 3,107.72

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Solution

The fourth proportional to 4,739.72, 7,110.54 and 3,107.72 is: 4,662.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,739.72 : 7,110.54 = 3,107.72 : x
  2. Step 2: Convert to fraction form
    4,739.72/7,110.54 = 3,107.72/x
  3. Step 3: Cross multiply
    4,739.72x = 7,110.54 × 3,107.72
  4. Step 4: Simplify right side
    4,739.72x = 22,097,567.37
  5. Step 5: Solve for x
    x = 22,097,567.37/4,739.72
  6. Step 6: Final answer
    x = 4,662.21

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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.