Home / 8,639.27-11,911.30-5,650.37

Finding the Fourth Proportional to 8,639.27, 11,911.30 and 5,650.37

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Solution

The fourth proportional to 8,639.27, 11,911.30 and 5,650.37 is: 7,790.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.27 : 11,911.30 = 5,650.37 : x
  2. Step 2: Convert to fraction form
    8,639.27/11,911.30 = 5,650.37/x
  3. Step 3: Cross multiply
    8,639.27x = 11,911.30 × 5,650.37
  4. Step 4: Simplify right side
    8,639.27x = 67,303,267.83
  5. Step 5: Solve for x
    x = 67,303,267.83/8,639.27
  6. Step 6: Final answer
    x = 7,790.39

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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.