Home / 8,639.96-11,930.06-5,616.57

Finding the Fourth Proportional to 8,639.96, 11,930.06 and 5,616.57

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Solution

The fourth proportional to 8,639.96, 11,930.06 and 5,616.57 is: 7,755.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.96 : 11,930.06 = 5,616.57 : x
  2. Step 2: Convert to fraction form
    8,639.96/11,930.06 = 5,616.57/x
  3. Step 3: Cross multiply
    8,639.96x = 11,930.06 × 5,616.57
  4. Step 4: Simplify right side
    8,639.96x = 67,006,075.87
  5. Step 5: Solve for x
    x = 67,006,075.87/8,639.96
  6. Step 6: Final answer
    x = 7,755.37

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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.