Home / 2,556.45-3,828.60-1,256.40

Finding the Fourth Proportional to 2,556.45, 3,828.60 and 1,256.40

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Solution

The fourth proportional to 2,556.45, 3,828.60 and 1,256.40 is: 1,881.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,556.45 : 3,828.60 = 1,256.40 : x
  2. Step 2: Convert to fraction form
    2,556.45/3,828.60 = 1,256.40/x
  3. Step 3: Cross multiply
    2,556.45x = 3,828.60 × 1,256.40
  4. Step 4: Simplify right side
    2,556.45x = 4,810,253.04
  5. Step 5: Solve for x
    x = 4,810,253.04/2,556.45
  6. Step 6: Final answer
    x = 1,881.61

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1.5x scale

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.