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Finding the Fourth Proportional to 5,758.63, 7,947.38 and 3,240.84

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Solution

The fourth proportional to 5,758.63, 7,947.38 and 3,240.84 is: 4,472.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,758.63 : 7,947.38 = 3,240.84 : x
  2. Step 2: Convert to fraction form
    5,758.63/7,947.38 = 3,240.84/x
  3. Step 3: Cross multiply
    5,758.63x = 7,947.38 × 3,240.84
  4. Step 4: Simplify right side
    5,758.63x = 25,756,224.90
  5. Step 5: Solve for x
    x = 25,756,224.90/5,758.63
  6. Step 6: Final answer
    x = 4,472.63

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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.