Home / 5,393.12-8,090.40-1,929.56

Finding the Fourth Proportional to 5,393.12, 8,090.40 and 1,929.56

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Solution

The fourth proportional to 5,393.12, 8,090.40 and 1,929.56 is: 2,894.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,393.12 : 8,090.40 = 1,929.56 : x
  2. Step 2: Convert to fraction form
    5,393.12/8,090.40 = 1,929.56/x
  3. Step 3: Cross multiply
    5,393.12x = 8,090.40 × 1,929.56
  4. Step 4: Simplify right side
    5,393.12x = 15,610,912.22
  5. Step 5: Solve for x
    x = 15,610,912.22/5,393.12
  6. Step 6: Final answer
    x = 2,894.60

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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.