Home / 2,818.14-3,889.51-1,639.89

Finding the Fourth Proportional to 2,818.14, 3,889.51 and 1,639.89

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Solution

The fourth proportional to 2,818.14, 3,889.51 and 1,639.89 is: 2,263.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.14 : 3,889.51 = 1,639.89 : x
  2. Step 2: Convert to fraction form
    2,818.14/3,889.51 = 1,639.89/x
  3. Step 3: Cross multiply
    2,818.14x = 3,889.51 × 1,639.89
  4. Step 4: Simplify right side
    2,818.14x = 6,378,364.45
  5. Step 5: Solve for x
    x = 6,378,364.45/2,818.14
  6. Step 6: Final answer
    x = 2,263.33

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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.