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Finding the Fourth Proportional to 7,150.99, 9,857.43 and 5,020.55

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Solution

The fourth proportional to 7,150.99, 9,857.43 and 5,020.55 is: 6,920.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,150.99 : 9,857.43 = 5,020.55 : x
  2. Step 2: Convert to fraction form
    7,150.99/9,857.43 = 5,020.55/x
  3. Step 3: Cross multiply
    7,150.99x = 9,857.43 × 5,020.55
  4. Step 4: Simplify right side
    7,150.99x = 49,489,670.90
  5. Step 5: Solve for x
    x = 49,489,670.90/7,150.99
  6. Step 6: Final answer
    x = 6,920.67

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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.