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Finding the Fourth Proportional to 7,147.55, 9,865.60 and 5,023.55

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Solution

The fourth proportional to 7,147.55, 9,865.60 and 5,023.55 is: 6,933.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.55 : 9,865.60 = 5,023.55 : x
  2. Step 2: Convert to fraction form
    7,147.55/9,865.60 = 5,023.55/x
  3. Step 3: Cross multiply
    7,147.55x = 9,865.60 × 5,023.55
  4. Step 4: Simplify right side
    7,147.55x = 49,560,272.99
  5. Step 5: Solve for x
    x = 49,560,272.99/7,147.55
  6. Step 6: Final answer
    x = 6,933.89

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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.