Home / 3,890.42-5,836.48-1,258.08

Finding the Fourth Proportional to 3,890.42, 5,836.48 and 1,258.08

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Solution

The fourth proportional to 3,890.42, 5,836.48 and 1,258.08 is: 1,887.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.42 : 5,836.48 = 1,258.08 : x
  2. Step 2: Convert to fraction form
    3,890.42/5,836.48 = 1,258.08/x
  3. Step 3: Cross multiply
    3,890.42x = 5,836.48 × 1,258.08
  4. Step 4: Simplify right side
    3,890.42x = 7,342,758.76
  5. Step 5: Solve for x
    x = 7,342,758.76/3,890.42
  6. Step 6: Final answer
    x = 1,887.39

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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.