Home / 2,745.20-4,117.80-1,206.20

Finding the Fourth Proportional to 2,745.20, 4,117.80 and 1,206.20

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Solution

The fourth proportional to 2,745.20, 4,117.80 and 1,206.20 is: 1,809.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,745.20 : 4,117.80 = 1,206.20 : x
  2. Step 2: Convert to fraction form
    2,745.20/4,117.80 = 1,206.20/x
  3. Step 3: Cross multiply
    2,745.20x = 4,117.80 × 1,206.20
  4. Step 4: Simplify right side
    2,745.20x = 4,966,869.77
  5. Step 5: Solve for x
    x = 4,966,869.77/2,745.20
  6. Step 6: Final answer
    x = 1,809.30

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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.