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Finding the Fourth Proportional to 5,819.70, 8,729.39 and 1,870.80

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Solution

The fourth proportional to 5,819.70, 8,729.39 and 1,870.80 is: 2,806.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,819.70 : 8,729.39 = 1,870.80 : x
  2. Step 2: Convert to fraction form
    5,819.70/8,729.39 = 1,870.80/x
  3. Step 3: Cross multiply
    5,819.70x = 8,729.39 × 1,870.80
  4. Step 4: Simplify right side
    5,819.70x = 16,330,933.46
  5. Step 5: Solve for x
    x = 16,330,933.46/5,819.70
  6. Step 6: Final answer
    x = 2,806.15

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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.