Home / 9,161.98-12,643.67-5,385.22

Finding the Fourth Proportional to 9,161.98, 12,643.67 and 5,385.22

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Solution

The fourth proportional to 9,161.98, 12,643.67 and 5,385.22 is: 7,431.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,161.98 : 12,643.67 = 5,385.22 : x
  2. Step 2: Convert to fraction form
    9,161.98/12,643.67 = 5,385.22/x
  3. Step 3: Cross multiply
    9,161.98x = 12,643.67 × 5,385.22
  4. Step 4: Simplify right side
    9,161.98x = 68,088,944.56
  5. Step 5: Solve for x
    x = 68,088,944.56/9,161.98
  6. Step 6: Final answer
    x = 7,431.68

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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.