Home / 5,189.64-7,788.48-1,904.88

Finding the Fourth Proportional to 5,189.64, 7,788.48 and 1,904.88

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Solution

The fourth proportional to 5,189.64, 7,788.48 and 1,904.88 is: 2,858.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,189.64 : 7,788.48 = 1,904.88 : x
  2. Step 2: Convert to fraction form
    5,189.64/7,788.48 = 1,904.88/x
  3. Step 3: Cross multiply
    5,189.64x = 7,788.48 × 1,904.88
  4. Step 4: Simplify right side
    5,189.64x = 14,836,119.78
  5. Step 5: Solve for x
    x = 14,836,119.78/5,189.64
  6. Step 6: Final answer
    x = 2,858.80

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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.