Home / 5,190.16-7,783.56-1,679.42

Finding the Fourth Proportional to 5,190.16, 7,783.56 and 1,679.42

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Solution

The fourth proportional to 5,190.16, 7,783.56 and 1,679.42 is: 2,518.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.16 : 7,783.56 = 1,679.42 : x
  2. Step 2: Convert to fraction form
    5,190.16/7,783.56 = 1,679.42/x
  3. Step 3: Cross multiply
    5,190.16x = 7,783.56 × 1,679.42
  4. Step 4: Simplify right side
    5,190.16x = 13,071,842.01
  5. Step 5: Solve for x
    x = 13,071,842.01/5,190.16
  6. Step 6: Final answer
    x = 2,518.58

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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.