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Finding the Fourth Proportional to 7,170.74, 10,749.63 and 2,550.50

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Solution

The fourth proportional to 7,170.74, 10,749.63 and 2,550.50 is: 3,823.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,170.74 : 10,749.63 = 2,550.50 : x
  2. Step 2: Convert to fraction form
    7,170.74/10,749.63 = 2,550.50/x
  3. Step 3: Cross multiply
    7,170.74x = 10,749.63 × 2,550.50
  4. Step 4: Simplify right side
    7,170.74x = 27,416,931.32
  5. Step 5: Solve for x
    x = 27,416,931.32/7,170.74
  6. Step 6: Final answer
    x = 3,823.45

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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.