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Finding the Fourth Proportional to 3,988.44, 5,495.04 and 2,938.68

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Solution

The fourth proportional to 3,988.44, 5,495.04 and 2,938.68 is: 4,048.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.44 : 5,495.04 = 2,938.68 : x
  2. Step 2: Convert to fraction form
    3,988.44/5,495.04 = 2,938.68/x
  3. Step 3: Cross multiply
    3,988.44x = 5,495.04 × 2,938.68
  4. Step 4: Simplify right side
    3,988.44x = 16,148,164.15
  5. Step 5: Solve for x
    x = 16,148,164.15/3,988.44
  6. Step 6: Final answer
    x = 4,048.74

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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.