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Finding the Fourth Proportional to 3,556.80, 5,336.80 and 1,707.20

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Solution

The fourth proportional to 3,556.80, 5,336.80 and 1,707.20 is: 2,561.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.80 : 5,336.80 = 1,707.20 : x
  2. Step 2: Convert to fraction form
    3,556.80/5,336.80 = 1,707.20/x
  3. Step 3: Cross multiply
    3,556.80x = 5,336.80 × 1,707.20
  4. Step 4: Simplify right side
    3,556.80x = 9,110,984.96
  5. Step 5: Solve for x
    x = 9,110,984.96/3,556.80
  6. Step 6: Final answer
    x = 2,561.57

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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.