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Finding the Fourth Proportional to 5,861.76, 8,790.81 and 1,965.25

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Solution

The fourth proportional to 5,861.76, 8,790.81 and 1,965.25 is: 2,947.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,861.76 : 8,790.81 = 1,965.25 : x
  2. Step 2: Convert to fraction form
    5,861.76/8,790.81 = 1,965.25/x
  3. Step 3: Cross multiply
    5,861.76x = 8,790.81 × 1,965.25
  4. Step 4: Simplify right side
    5,861.76x = 17,276,139.35
  5. Step 5: Solve for x
    x = 17,276,139.35/5,861.76
  6. Step 6: Final answer
    x = 2,947.26

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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.