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Finding the Fourth Proportional to 7,114.60, 10,647.60 and 6,239.80

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Solution

The fourth proportional to 7,114.60, 10,647.60 and 6,239.80 is: 9,338.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,114.60 : 10,647.60 = 6,239.80 : x
  2. Step 2: Convert to fraction form
    7,114.60/10,647.60 = 6,239.80/x
  3. Step 3: Cross multiply
    7,114.60x = 10,647.60 × 6,239.80
  4. Step 4: Simplify right side
    7,114.60x = 66,438,894.48
  5. Step 5: Solve for x
    x = 66,438,894.48/7,114.60
  6. Step 6: Final answer
    x = 9,338.39

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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.