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Finding the Fourth Proportional to 3,615.56, 4,987.14 and 3,021.56

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Solution

The fourth proportional to 3,615.56, 4,987.14 and 3,021.56 is: 4,167.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.56 : 4,987.14 = 3,021.56 : x
  2. Step 2: Convert to fraction form
    3,615.56/4,987.14 = 3,021.56/x
  3. Step 3: Cross multiply
    3,615.56x = 4,987.14 × 3,021.56
  4. Step 4: Simplify right side
    3,615.56x = 15,068,942.74
  5. Step 5: Solve for x
    x = 15,068,942.74/3,615.56
  6. Step 6: Final answer
    x = 4,167.80

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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.