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Finding the Fourth Proportional to 7,653.87, 11,482.79 and 3,209.15

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Solution

The fourth proportional to 7,653.87, 11,482.79 and 3,209.15 is: 4,814.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,653.87 : 11,482.79 = 3,209.15 : x
  2. Step 2: Convert to fraction form
    7,653.87/11,482.79 = 3,209.15/x
  3. Step 3: Cross multiply
    7,653.87x = 11,482.79 × 3,209.15
  4. Step 4: Simplify right side
    7,653.87x = 36,849,922.07
  5. Step 5: Solve for x
    x = 36,849,922.07/7,653.87
  6. Step 6: Final answer
    x = 4,814.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.