Home / 2,139.94-3,206.80-1,043.07

Finding the Fourth Proportional to 2,139.94, 3,206.80 and 1,043.07

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Solution

The fourth proportional to 2,139.94, 3,206.80 and 1,043.07 is: 1,563.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139.94 : 3,206.80 = 1,043.07 : x
  2. Step 2: Convert to fraction form
    2,139.94/3,206.80 = 1,043.07/x
  3. Step 3: Cross multiply
    2,139.94x = 3,206.80 × 1,043.07
  4. Step 4: Simplify right side
    2,139.94x = 3,344,916.88
  5. Step 5: Solve for x
    x = 3,344,916.88/2,139.94
  6. Step 6: Final answer
    x = 1,563.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.