Home / 8,351.72-11,520.16-5,371.44

Finding the Fourth Proportional to 8,351.72, 11,520.16 and 5,371.44

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Solution

The fourth proportional to 8,351.72, 11,520.16 and 5,371.44 is: 7,409.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,351.72 : 11,520.16 = 5,371.44 : x
  2. Step 2: Convert to fraction form
    8,351.72/11,520.16 = 5,371.44/x
  3. Step 3: Cross multiply
    8,351.72x = 11,520.16 × 5,371.44
  4. Step 4: Simplify right side
    8,351.72x = 61,879,848.23
  5. Step 5: Solve for x
    x = 61,879,848.23/8,351.72
  6. Step 6: Final answer
    x = 7,409.23

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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.