Home / 2,818.02-3,889.35-1,639.47

Finding the Fourth Proportional to 2,818.02, 3,889.35 and 1,639.47

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Solution

The fourth proportional to 2,818.02, 3,889.35 and 1,639.47 is: 2,262.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.02 : 3,889.35 = 1,639.47 : x
  2. Step 2: Convert to fraction form
    2,818.02/3,889.35 = 1,639.47/x
  3. Step 3: Cross multiply
    2,818.02x = 3,889.35 × 1,639.47
  4. Step 4: Simplify right side
    2,818.02x = 6,376,472.64
  5. Step 5: Solve for x
    x = 6,376,472.64/2,818.02
  6. Step 6: Final answer
    x = 2,262.75

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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.