Home / 2,556.84-3,835.64-1,258.40

Finding the Fourth Proportional to 2,556.84, 3,835.64 and 1,258.40

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Solution

The fourth proportional to 2,556.84, 3,835.64 and 1,258.40 is: 1,887.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,556.84 : 3,835.64 = 1,258.40 : x
  2. Step 2: Convert to fraction form
    2,556.84/3,835.64 = 1,258.40/x
  3. Step 3: Cross multiply
    2,556.84x = 3,835.64 × 1,258.40
  4. Step 4: Simplify right side
    2,556.84x = 4,826,769.38
  5. Step 5: Solve for x
    x = 4,826,769.38/2,556.84
  6. Step 6: Final answer
    x = 1,887.79

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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.