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Finding the Fourth Proportional to 3,556.51, 4,908.05 and 1,984.57

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Solution

The fourth proportional to 3,556.51, 4,908.05 and 1,984.57 is: 2,738.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.51 : 4,908.05 = 1,984.57 : x
  2. Step 2: Convert to fraction form
    3,556.51/4,908.05 = 1,984.57/x
  3. Step 3: Cross multiply
    3,556.51x = 4,908.05 × 1,984.57
  4. Step 4: Simplify right side
    3,556.51x = 9,740,349.21
  5. Step 5: Solve for x
    x = 9,740,349.21/3,556.51
  6. Step 6: Final answer
    x = 2,738.74

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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.