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Finding the Fourth Proportional to 5,231.70, 7,835.40 and 3,579.30

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Solution

The fourth proportional to 5,231.70, 7,835.40 and 3,579.30 is: 5,360.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.70 : 7,835.40 = 3,579.30 : x
  2. Step 2: Convert to fraction form
    5,231.70/7,835.40 = 3,579.30/x
  3. Step 3: Cross multiply
    5,231.70x = 7,835.40 × 3,579.30
  4. Step 4: Simplify right side
    5,231.70x = 28,045,247.22
  5. Step 5: Solve for x
    x = 28,045,247.22/5,231.70
  6. Step 6: Final answer
    x = 5,360.64

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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.