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Finding the Fourth Proportional to 4,970.34, 6,859.89 and 3,789.18

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Solution

The fourth proportional to 4,970.34, 6,859.89 and 3,789.18 is: 5,229.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,970.34 : 6,859.89 = 3,789.18 : x
  2. Step 2: Convert to fraction form
    4,970.34/6,859.89 = 3,789.18/x
  3. Step 3: Cross multiply
    4,970.34x = 6,859.89 × 3,789.18
  4. Step 4: Simplify right side
    4,970.34x = 25,993,357.99
  5. Step 5: Solve for x
    x = 25,993,357.99/4,970.34
  6. Step 6: Final answer
    x = 5,229.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.