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Finding the Fourth Proportional to 5,855.05, 8,780.74 and 1,958.54

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Solution

The fourth proportional to 5,855.05, 8,780.74 and 1,958.54 is: 2,937.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,855.05 : 8,780.74 = 1,958.54 : x
  2. Step 2: Convert to fraction form
    5,855.05/8,780.74 = 1,958.54/x
  3. Step 3: Cross multiply
    5,855.05x = 8,780.74 × 1,958.54
  4. Step 4: Simplify right side
    5,855.05x = 17,197,430.52
  5. Step 5: Solve for x
    x = 17,197,430.52/5,855.05
  6. Step 6: Final answer
    x = 2,937.20

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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.