Home / 2,847.50-3,929.45-1,668.54

Finding the Fourth Proportional to 2,847.50, 3,929.45 and 1,668.54

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Solution

The fourth proportional to 2,847.50, 3,929.45 and 1,668.54 is: 2,302.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,847.50 : 3,929.45 = 1,668.54 : x
  2. Step 2: Convert to fraction form
    2,847.50/3,929.45 = 1,668.54/x
  3. Step 3: Cross multiply
    2,847.50x = 3,929.45 × 1,668.54
  4. Step 4: Simplify right side
    2,847.50x = 6,556,450.90
  5. Step 5: Solve for x
    x = 6,556,450.90/2,847.50
  6. Step 6: Final answer
    x = 2,302.53

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1.5x scale

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.