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Finding the Fourth Proportional to 3,310.80, 4,964.97 and 970.20

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Solution

The fourth proportional to 3,310.80, 4,964.97 and 970.20 is: 1,454.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,310.80 : 4,964.97 = 970.20 : x
  2. Step 2: Convert to fraction form
    3,310.80/4,964.97 = 970.20/x
  3. Step 3: Cross multiply
    3,310.80x = 4,964.97 × 970.20
  4. Step 4: Simplify right side
    3,310.80x = 4,817,028.77
  5. Step 5: Solve for x
    x = 4,817,028.77/3,310.80
  6. Step 6: Final answer
    x = 1,454.94

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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.