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Finding the Fourth Proportional to 7,898.82, 11,847.87 and 1,975.77

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Solution

The fourth proportional to 7,898.82, 11,847.87 and 1,975.77 is: 2,963.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,898.82 : 11,847.87 = 1,975.77 : x
  2. Step 2: Convert to fraction form
    7,898.82/11,847.87 = 1,975.77/x
  3. Step 3: Cross multiply
    7,898.82x = 11,847.87 × 1,975.77
  4. Step 4: Simplify right side
    7,898.82x = 23,408,666.11
  5. Step 5: Solve for x
    x = 23,408,666.11/7,898.82
  6. Step 6: Final answer
    x = 2,963.56

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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.