Home / 2,818.23-3,889.50-1,639.31

Finding the Fourth Proportional to 2,818.23, 3,889.50 and 1,639.31

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Solution

The fourth proportional to 2,818.23, 3,889.50 and 1,639.31 is: 2,262.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.23 : 3,889.50 = 1,639.31 : x
  2. Step 2: Convert to fraction form
    2,818.23/3,889.50 = 1,639.31/x
  3. Step 3: Cross multiply
    2,818.23x = 3,889.50 × 1,639.31
  4. Step 4: Simplify right side
    2,818.23x = 6,376,079.87
  5. Step 5: Solve for x
    x = 6,376,079.87/2,818.23
  6. Step 6: Final answer
    x = 2,262.44

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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.