Home / 2,896.95-3,998.45-1,638.74

Finding the Fourth Proportional to 2,896.95, 3,998.45 and 1,638.74

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Solution

The fourth proportional to 2,896.95, 3,998.45 and 1,638.74 is: 2,261.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,896.95 : 3,998.45 = 1,638.74 : x
  2. Step 2: Convert to fraction form
    2,896.95/3,998.45 = 1,638.74/x
  3. Step 3: Cross multiply
    2,896.95x = 3,998.45 × 1,638.74
  4. Step 4: Simplify right side
    2,896.95x = 6,552,391.77
  5. Step 5: Solve for x
    x = 6,552,391.77/2,896.95
  6. Step 6: Final answer
    x = 2,261.82

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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.