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Finding the Fourth Proportional to 7,750.40, 11,614.08 and 7,485.44

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Solution

The fourth proportional to 7,750.40, 11,614.08 and 7,485.44 is: 11,217.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,750.40 : 11,614.08 = 7,485.44 : x
  2. Step 2: Convert to fraction form
    7,750.40/11,614.08 = 7,485.44/x
  3. Step 3: Cross multiply
    7,750.40x = 11,614.08 × 7,485.44
  4. Step 4: Simplify right side
    7,750.40x = 86,936,499.00
  5. Step 5: Solve for x
    x = 86,936,499.00/7,750.40
  6. Step 6: Final answer
    x = 11,217.03

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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.