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Finding the Fourth Proportional to 6,609.59, 9,118.09 and 3,956.49

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Solution

The fourth proportional to 6,609.59, 9,118.09 and 3,956.49 is: 5,458.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,609.59 : 9,118.09 = 3,956.49 : x
  2. Step 2: Convert to fraction form
    6,609.59/9,118.09 = 3,956.49/x
  3. Step 3: Cross multiply
    6,609.59x = 9,118.09 × 3,956.49
  4. Step 4: Simplify right side
    6,609.59x = 36,075,631.90
  5. Step 5: Solve for x
    x = 36,075,631.90/6,609.59
  6. Step 6: Final answer
    x = 5,458.07

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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.