Home / 2,881.50-3,976.47-1,639.74

Finding the Fourth Proportional to 2,881.50, 3,976.47 and 1,639.74

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Solution

The fourth proportional to 2,881.50, 3,976.47 and 1,639.74 is: 2,262.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,881.50 : 3,976.47 = 1,639.74 : x
  2. Step 2: Convert to fraction form
    2,881.50/3,976.47 = 1,639.74/x
  3. Step 3: Cross multiply
    2,881.50x = 3,976.47 × 1,639.74
  4. Step 4: Simplify right side
    2,881.50x = 6,520,376.92
  5. Step 5: Solve for x
    x = 6,520,376.92/2,881.50
  6. Step 6: Final answer
    x = 2,262.84

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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.