Home / 8,439.80-11,647.36-5,083.66

Finding the Fourth Proportional to 8,439.80, 11,647.36 and 5,083.66

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Solution

The fourth proportional to 8,439.80, 11,647.36 and 5,083.66 is: 7,015.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.80 : 11,647.36 = 5,083.66 : x
  2. Step 2: Convert to fraction form
    8,439.80/11,647.36 = 5,083.66/x
  3. Step 3: Cross multiply
    8,439.80x = 11,647.36 × 5,083.66
  4. Step 4: Simplify right side
    8,439.80x = 59,211,239.05
  5. Step 5: Solve for x
    x = 59,211,239.05/8,439.80
  6. Step 6: Final answer
    x = 7,015.72

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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.