Home / 2,818.33-3,888.68-1,638.77

Finding the Fourth Proportional to 2,818.33, 3,888.68 and 1,638.77

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Solution

The fourth proportional to 2,818.33, 3,888.68 and 1,638.77 is: 2,261.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.33 : 3,888.68 = 1,638.77 : x
  2. Step 2: Convert to fraction form
    2,818.33/3,888.68 = 1,638.77/x
  3. Step 3: Cross multiply
    2,818.33x = 3,888.68 × 1,638.77
  4. Step 4: Simplify right side
    2,818.33x = 6,372,624.49
  5. Step 5: Solve for x
    x = 6,372,624.49/2,818.33
  6. Step 6: Final answer
    x = 2,261.14

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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.