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Finding the Fourth Proportional to 5,485.70, 8,212.35 and 4,837.70

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Solution

The fourth proportional to 5,485.70, 8,212.35 and 4,837.70 is: 7,242.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,485.70 : 8,212.35 = 4,837.70 : x
  2. Step 2: Convert to fraction form
    5,485.70/8,212.35 = 4,837.70/x
  3. Step 3: Cross multiply
    5,485.70x = 8,212.35 × 4,837.70
  4. Step 4: Simplify right side
    5,485.70x = 39,728,885.60
  5. Step 5: Solve for x
    x = 39,728,885.60/5,485.70
  6. Step 6: Final answer
    x = 7,242.26

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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.