Home / 2,817.32-3,887.80-1,638.23

Finding the Fourth Proportional to 2,817.32, 3,887.80 and 1,638.23

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Solution

The fourth proportional to 2,817.32, 3,887.80 and 1,638.23 is: 2,260.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.32 : 3,887.80 = 1,638.23 : x
  2. Step 2: Convert to fraction form
    2,817.32/3,887.80 = 1,638.23/x
  3. Step 3: Cross multiply
    2,817.32x = 3,887.80 × 1,638.23
  4. Step 4: Simplify right side
    2,817.32x = 6,369,087.06
  5. Step 5: Solve for x
    x = 6,369,087.06/2,817.32
  6. Step 6: Final answer
    x = 2,260.69

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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.