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Finding the Fourth Proportional to 5,458.47, 8,172.31 and 5,283.51

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Solution

The fourth proportional to 5,458.47, 8,172.31 and 5,283.51 is: 7,910.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,458.47 : 8,172.31 = 5,283.51 : x
  2. Step 2: Convert to fraction form
    5,458.47/8,172.31 = 5,283.51/x
  3. Step 3: Cross multiply
    5,458.47x = 8,172.31 × 5,283.51
  4. Step 4: Simplify right side
    5,458.47x = 43,178,414.33
  5. Step 5: Solve for x
    x = 43,178,414.33/5,458.47
  6. Step 6: Final answer
    x = 7,910.36

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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.