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Finding the Fourth Proportional to 5,315.70, 7,975.96 and 3,758.88

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Solution

The fourth proportional to 5,315.70, 7,975.96 and 3,758.88 is: 5,640.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.70 : 7,975.96 = 3,758.88 : x
  2. Step 2: Convert to fraction form
    5,315.70/7,975.96 = 3,758.88/x
  3. Step 3: Cross multiply
    5,315.70x = 7,975.96 × 3,758.88
  4. Step 4: Simplify right side
    5,315.70x = 29,980,676.52
  5. Step 5: Solve for x
    x = 29,980,676.52/5,315.70
  6. Step 6: Final answer
    x = 5,640.02

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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.