Home / 3,205.80-4,427.28-2,648.16

Finding the Fourth Proportional to 3,205.80, 4,427.28 and 2,648.16

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Solution

The fourth proportional to 3,205.80, 4,427.28 and 2,648.16 is: 3,657.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.80 : 4,427.28 = 2,648.16 : x
  2. Step 2: Convert to fraction form
    3,205.80/4,427.28 = 2,648.16/x
  3. Step 3: Cross multiply
    3,205.80x = 4,427.28 × 2,648.16
  4. Step 4: Simplify right side
    3,205.80x = 11,724,145.80
  5. Step 5: Solve for x
    x = 11,724,145.80/3,205.80
  6. Step 6: Final answer
    x = 3,657.17

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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.