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Finding the Fourth Proportional to 5,288.80, 7,932.60 and 1,393.51

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Solution

The fourth proportional to 5,288.80, 7,932.60 and 1,393.51 is: 2,090.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,288.80 : 7,932.60 = 1,393.51 : x
  2. Step 2: Convert to fraction form
    5,288.80/7,932.60 = 1,393.51/x
  3. Step 3: Cross multiply
    5,288.80x = 7,932.60 × 1,393.51
  4. Step 4: Simplify right side
    5,288.80x = 11,054,157.43
  5. Step 5: Solve for x
    x = 11,054,157.43/5,288.80
  6. Step 6: Final answer
    x = 2,090.11

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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.