Home / 3,020.80-4,531.20-2,603.20

Finding the Fourth Proportional to 3,020.80, 4,531.20 and 2,603.20

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Solution

The fourth proportional to 3,020.80, 4,531.20 and 2,603.20 is: 3,904.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,020.80 : 4,531.20 = 2,603.20 : x
  2. Step 2: Convert to fraction form
    3,020.80/4,531.20 = 2,603.20/x
  3. Step 3: Cross multiply
    3,020.80x = 4,531.20 × 2,603.20
  4. Step 4: Simplify right side
    3,020.80x = 11,795,619.84
  5. Step 5: Solve for x
    x = 11,795,619.84/3,020.80
  6. Step 6: Final answer
    x = 3,904.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.