Home / 2,818.14-3,888.96-1,639.02

Finding the Fourth Proportional to 2,818.14, 3,888.96 and 1,639.02

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Solution

The fourth proportional to 2,818.14, 3,888.96 and 1,639.02 is: 2,261.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.14 : 3,888.96 = 1,639.02 : x
  2. Step 2: Convert to fraction form
    2,818.14/3,888.96 = 1,639.02/x
  3. Step 3: Cross multiply
    2,818.14x = 3,888.96 × 1,639.02
  4. Step 4: Simplify right side
    2,818.14x = 6,374,083.22
  5. Step 5: Solve for x
    x = 6,374,083.22/2,818.14
  6. Step 6: Final answer
    x = 2,261.81

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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.