Home / 2,991.79-4,124.38-2,104.84

Finding the Fourth Proportional to 2,991.79, 4,124.38 and 2,104.84

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Solution

The fourth proportional to 2,991.79, 4,124.38 and 2,104.84 is: 2,901.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.79 : 4,124.38 = 2,104.84 : x
  2. Step 2: Convert to fraction form
    2,991.79/4,124.38 = 2,104.84/x
  3. Step 3: Cross multiply
    2,991.79x = 4,124.38 × 2,104.84
  4. Step 4: Simplify right side
    2,991.79x = 8,681,160.00
  5. Step 5: Solve for x
    x = 8,681,160.00/2,991.79
  6. Step 6: Final answer
    x = 2,901.66

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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.