Home / 2,620.02-3,611.43-1,988.49

Finding the Fourth Proportional to 2,620.02, 3,611.43 and 1,988.49

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Solution

The fourth proportional to 2,620.02, 3,611.43 and 1,988.49 is: 2,740.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.02 : 3,611.43 = 1,988.49 : x
  2. Step 2: Convert to fraction form
    2,620.02/3,611.43 = 1,988.49/x
  3. Step 3: Cross multiply
    2,620.02x = 3,611.43 × 1,988.49
  4. Step 4: Simplify right side
    2,620.02x = 7,181,292.44
  5. Step 5: Solve for x
    x = 7,181,292.44/2,620.02
  6. Step 6: Final answer
    x = 2,740.93

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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.