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Finding the Fourth Proportional to 8,891.75, 13,342.93 and 5,148.34

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Solution

The fourth proportional to 8,891.75, 13,342.93 and 5,148.34 is: 7,725.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.75 : 13,342.93 = 5,148.34 : x
  2. Step 2: Convert to fraction form
    8,891.75/13,342.93 = 5,148.34/x
  3. Step 3: Cross multiply
    8,891.75x = 13,342.93 × 5,148.34
  4. Step 4: Simplify right side
    8,891.75x = 68,693,894.01
  5. Step 5: Solve for x
    x = 68,693,894.01/8,891.75
  6. Step 6: Final answer
    x = 7,725.57

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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.