Home / 2,898.58-3,999.77-1,639.75

Finding the Fourth Proportional to 2,898.58, 3,999.77 and 1,639.75

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Solution

The fourth proportional to 2,898.58, 3,999.77 and 1,639.75 is: 2,262.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,898.58 : 3,999.77 = 1,639.75 : x
  2. Step 2: Convert to fraction form
    2,898.58/3,999.77 = 1,639.75/x
  3. Step 3: Cross multiply
    2,898.58x = 3,999.77 × 1,639.75
  4. Step 4: Simplify right side
    2,898.58x = 6,558,616.96
  5. Step 5: Solve for x
    x = 6,558,616.96/2,898.58
  6. Step 6: Final answer
    x = 2,262.70

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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.