Home / 7,890.62-11,847.60-5,274.45

Finding the Fourth Proportional to 7,890.62, 11,847.60 and 5,274.45

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Solution

The fourth proportional to 7,890.62, 11,847.60 and 5,274.45 is: 7,919.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.62 : 11,847.60 = 5,274.45 : x
  2. Step 2: Convert to fraction form
    7,890.62/11,847.60 = 5,274.45/x
  3. Step 3: Cross multiply
    7,890.62x = 11,847.60 × 5,274.45
  4. Step 4: Simplify right side
    7,890.62x = 62,489,573.82
  5. Step 5: Solve for x
    x = 62,489,573.82/7,890.62
  6. Step 6: Final answer
    x = 7,919.48

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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.