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Finding the Fourth Proportional to 3,325.15, 4,986.19 and 984.32

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Solution

The fourth proportional to 3,325.15, 4,986.19 and 984.32 is: 1,476.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,325.15 : 4,986.19 = 984.32 : x
  2. Step 2: Convert to fraction form
    3,325.15/4,986.19 = 984.32/x
  3. Step 3: Cross multiply
    3,325.15x = 4,986.19 × 984.32
  4. Step 4: Simplify right side
    3,325.15x = 4,907,981.61
  5. Step 5: Solve for x
    x = 4,907,981.61/3,325.15
  6. Step 6: Final answer
    x = 1,476.02

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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.