Home / 3,886.37-5,828.55-1,112.40

Finding the Fourth Proportional to 3,886.37, 5,828.55 and 1,112.40

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Solution

The fourth proportional to 3,886.37, 5,828.55 and 1,112.40 is: 1,668.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.37 : 5,828.55 = 1,112.40 : x
  2. Step 2: Convert to fraction form
    3,886.37/5,828.55 = 1,112.40/x
  3. Step 3: Cross multiply
    3,886.37x = 5,828.55 × 1,112.40
  4. Step 4: Simplify right side
    3,886.37x = 6,483,679.02
  5. Step 5: Solve for x
    x = 6,483,679.02/3,886.37
  6. Step 6: Final answer
    x = 1,668.31

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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.