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Finding the Fourth Proportional to 2,379.05, 3,568.77 and 647.66

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Solution

The fourth proportional to 2,379.05, 3,568.77 and 647.66 is: 971.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.05 : 3,568.77 = 647.66 : x
  2. Step 2: Convert to fraction form
    2,379.05/3,568.77 = 647.66/x
  3. Step 3: Cross multiply
    2,379.05x = 3,568.77 × 647.66
  4. Step 4: Simplify right side
    2,379.05x = 2,311,349.58
  5. Step 5: Solve for x
    x = 2,311,349.58/2,379.05
  6. Step 6: Final answer
    x = 971.54

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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.