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Finding the Fourth Proportional to 2,988.73, 4,122.16 and 2,652.99

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Solution

The fourth proportional to 2,988.73, 4,122.16 and 2,652.99 is: 3,659.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.73 : 4,122.16 = 2,652.99 : x
  2. Step 2: Convert to fraction form
    2,988.73/4,122.16 = 2,652.99/x
  3. Step 3: Cross multiply
    2,988.73x = 4,122.16 × 2,652.99
  4. Step 4: Simplify right side
    2,988.73x = 10,936,049.26
  5. Step 5: Solve for x
    x = 10,936,049.26/2,988.73
  6. Step 6: Final answer
    x = 3,659.10

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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.