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Finding the Fourth Proportional to 5,758.76, 7,947.18 and 3,520.16

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Solution

The fourth proportional to 5,758.76, 7,947.18 and 3,520.16 is: 4,857.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,758.76 : 7,947.18 = 3,520.16 : x
  2. Step 2: Convert to fraction form
    5,758.76/7,947.18 = 3,520.16/x
  3. Step 3: Cross multiply
    5,758.76x = 7,947.18 × 3,520.16
  4. Step 4: Simplify right side
    5,758.76x = 27,975,335.21
  5. Step 5: Solve for x
    x = 27,975,335.21/5,758.76
  6. Step 6: Final answer
    x = 4,857.87

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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.