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Finding the Fourth Proportional to 2,270.30, 3,405.17 and 970.79

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Solution

The fourth proportional to 2,270.30, 3,405.17 and 970.79 is: 1,456.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,270.30 : 3,405.17 = 970.79 : x
  2. Step 2: Convert to fraction form
    2,270.30/3,405.17 = 970.79/x
  3. Step 3: Cross multiply
    2,270.30x = 3,405.17 × 970.79
  4. Step 4: Simplify right side
    2,270.30x = 3,305,690.39
  5. Step 5: Solve for x
    x = 3,305,690.39/2,270.30
  6. Step 6: Final answer
    x = 1,456.06

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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.