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Finding the Fourth Proportional to 7,225.70, 10,839.60 and 3,065.70

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Solution

The fourth proportional to 7,225.70, 10,839.60 and 3,065.70 is: 4,599.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,225.70 : 10,839.60 = 3,065.70 : x
  2. Step 2: Convert to fraction form
    7,225.70/10,839.60 = 3,065.70/x
  3. Step 3: Cross multiply
    7,225.70x = 10,839.60 × 3,065.70
  4. Step 4: Simplify right side
    7,225.70x = 33,230,961.72
  5. Step 5: Solve for x
    x = 33,230,961.72/7,225.70
  6. Step 6: Final answer
    x = 4,599.00

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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.