Home / 2,991.24-4,128.30-2,048.00

Finding the Fourth Proportional to 2,991.24, 4,128.30 and 2,048.00

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Solution

The fourth proportional to 2,991.24, 4,128.30 and 2,048.00 is: 2,826.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.24 : 4,128.30 = 2,048.00 : x
  2. Step 2: Convert to fraction form
    2,991.24/4,128.30 = 2,048.00/x
  3. Step 3: Cross multiply
    2,991.24x = 4,128.30 × 2,048.00
  4. Step 4: Simplify right side
    2,991.24x = 8,454,737.76
  5. Step 5: Solve for x
    x = 8,454,737.76/2,991.24
  6. Step 6: Final answer
    x = 2,826.50

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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.