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Finding the Fourth Proportional to 5,392.70, 8,089.05 and 5,157.47

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Solution

The fourth proportional to 5,392.70, 8,089.05 and 5,157.47 is: 7,736.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,392.70 : 8,089.05 = 5,157.47 : x
  2. Step 2: Convert to fraction form
    5,392.70/8,089.05 = 5,157.47/x
  3. Step 3: Cross multiply
    5,392.70x = 8,089.05 × 5,157.47
  4. Step 4: Simplify right side
    5,392.70x = 41,718,992.26
  5. Step 5: Solve for x
    x = 41,718,992.26/5,392.70
  6. Step 6: Final answer
    x = 7,736.20

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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.