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Finding the Fourth Proportional to 3,294.12, 4,941.20 and 985.64

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Solution

The fourth proportional to 3,294.12, 4,941.20 and 985.64 is: 1,478.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,294.12 : 4,941.20 = 985.64 : x
  2. Step 2: Convert to fraction form
    3,294.12/4,941.20 = 985.64/x
  3. Step 3: Cross multiply
    3,294.12x = 4,941.20 × 985.64
  4. Step 4: Simplify right side
    3,294.12x = 4,870,244.37
  5. Step 5: Solve for x
    x = 4,870,244.37/3,294.12
  6. Step 6: Final answer
    x = 1,478.47

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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.