Home / 2,767.09-3,817.29-1,647.40

Finding the Fourth Proportional to 2,767.09, 3,817.29 and 1,647.40

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Solution

The fourth proportional to 2,767.09, 3,817.29 and 1,647.40 is: 2,272.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,767.09 : 3,817.29 = 1,647.40 : x
  2. Step 2: Convert to fraction form
    2,767.09/3,817.29 = 1,647.40/x
  3. Step 3: Cross multiply
    2,767.09x = 3,817.29 × 1,647.40
  4. Step 4: Simplify right side
    2,767.09x = 6,288,603.55
  5. Step 5: Solve for x
    x = 6,288,603.55/2,767.09
  6. Step 6: Final answer
    x = 2,272.64

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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.