Home / 2,838.40-4,258.88-1,277.54

Finding the Fourth Proportional to 2,838.40, 4,258.88 and 1,277.54

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Solution

The fourth proportional to 2,838.40, 4,258.88 and 1,277.54 is: 1,916.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,838.40 : 4,258.88 = 1,277.54 : x
  2. Step 2: Convert to fraction form
    2,838.40/4,258.88 = 1,277.54/x
  3. Step 3: Cross multiply
    2,838.40x = 4,258.88 × 1,277.54
  4. Step 4: Simplify right side
    2,838.40x = 5,440,889.56
  5. Step 5: Solve for x
    x = 5,440,889.56/2,838.40
  6. Step 6: Final answer
    x = 1,916.89

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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.