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Finding the Fourth Proportional to 8,480.72, 12,703.73 and 3,971.31

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Solution

The fourth proportional to 8,480.72, 12,703.73 and 3,971.31 is: 5,948.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.72 : 12,703.73 = 3,971.31 : x
  2. Step 2: Convert to fraction form
    8,480.72/12,703.73 = 3,971.31/x
  3. Step 3: Cross multiply
    8,480.72x = 12,703.73 × 3,971.31
  4. Step 4: Simplify right side
    8,480.72x = 50,450,430.13
  5. Step 5: Solve for x
    x = 50,450,430.13/8,480.72
  6. Step 6: Final answer
    x = 5,948.84

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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.