Home / 5,231.20-7,220.40-4,861.60

Finding the Fourth Proportional to 5,231.20, 7,220.40 and 4,861.60

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Solution

The fourth proportional to 5,231.20, 7,220.40 and 4,861.60 is: 6,710.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.20 : 7,220.40 = 4,861.60 : x
  2. Step 2: Convert to fraction form
    5,231.20/7,220.40 = 4,861.60/x
  3. Step 3: Cross multiply
    5,231.20x = 7,220.40 × 4,861.60
  4. Step 4: Simplify right side
    5,231.20x = 35,102,696.64
  5. Step 5: Solve for x
    x = 35,102,696.64/5,231.20
  6. Step 6: Final answer
    x = 6,710.26

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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.