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Finding the Fourth Proportional to 3,988.94, 5,504.49 and 2,310.22

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Solution

The fourth proportional to 3,988.94, 5,504.49 and 2,310.22 is: 3,187.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.94 : 5,504.49 = 2,310.22 : x
  2. Step 2: Convert to fraction form
    3,988.94/5,504.49 = 2,310.22/x
  3. Step 3: Cross multiply
    3,988.94x = 5,504.49 × 2,310.22
  4. Step 4: Simplify right side
    3,988.94x = 12,716,569.13
  5. Step 5: Solve for x
    x = 12,716,569.13/3,988.94
  6. Step 6: Final answer
    x = 3,187.96

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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.