Home / 3,102.80-4,280.90-1,776.26

Finding the Fourth Proportional to 3,102.80, 4,280.90 and 1,776.26

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Solution

The fourth proportional to 3,102.80, 4,280.90 and 1,776.26 is: 2,450.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.80 : 4,280.90 = 1,776.26 : x
  2. Step 2: Convert to fraction form
    3,102.80/4,280.90 = 1,776.26/x
  3. Step 3: Cross multiply
    3,102.80x = 4,280.90 × 1,776.26
  4. Step 4: Simplify right side
    3,102.80x = 7,603,970.03
  5. Step 5: Solve for x
    x = 7,603,970.03/3,102.80
  6. Step 6: Final answer
    x = 2,450.68

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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.