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Finding the Fourth Proportional to 5,451.42, 8,137.62 and 5,045.34

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Solution

The fourth proportional to 5,451.42, 8,137.62 and 5,045.34 is: 7,531.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,451.42 : 8,137.62 = 5,045.34 : x
  2. Step 2: Convert to fraction form
    5,451.42/8,137.62 = 5,045.34/x
  3. Step 3: Cross multiply
    5,451.42x = 8,137.62 × 5,045.34
  4. Step 4: Simplify right side
    5,451.42x = 41,057,059.69
  5. Step 5: Solve for x
    x = 41,057,059.69/5,451.42
  6. Step 6: Final answer
    x = 7,531.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.