Home / 1,556.50-2,150.11-1,261.26

Finding the Fourth Proportional to 1,556.50, 2,150.11 and 1,261.26

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Solution

The fourth proportional to 1,556.50, 2,150.11 and 1,261.26 is: 1,742.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.50 : 2,150.11 = 1,261.26 : x
  2. Step 2: Convert to fraction form
    1,556.50/2,150.11 = 1,261.26/x
  3. Step 3: Cross multiply
    1,556.50x = 2,150.11 × 1,261.26
  4. Step 4: Simplify right side
    1,556.50x = 2,711,847.74
  5. Step 5: Solve for x
    x = 2,711,847.74/1,556.50
  6. Step 6: Final answer
    x = 1,742.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.