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Finding the Fourth Proportional to 2,482.75, 3,723.78 and 839.08

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Solution

The fourth proportional to 2,482.75, 3,723.78 and 839.08 is: 1,258.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,482.75 : 3,723.78 = 839.08 : x
  2. Step 2: Convert to fraction form
    2,482.75/3,723.78 = 839.08/x
  3. Step 3: Cross multiply
    2,482.75x = 3,723.78 × 839.08
  4. Step 4: Simplify right side
    2,482.75x = 3,124,549.32
  5. Step 5: Solve for x
    x = 3,124,549.32/2,482.75
  6. Step 6: Final answer
    x = 1,258.50

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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.