Home / 2,780.81-4,173.27-2,239.53

Finding the Fourth Proportional to 2,780.81, 4,173.27 and 2,239.53

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Solution

The fourth proportional to 2,780.81, 4,173.27 and 2,239.53 is: 3,360.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.81 : 4,173.27 = 2,239.53 : x
  2. Step 2: Convert to fraction form
    2,780.81/4,173.27 = 2,239.53/x
  3. Step 3: Cross multiply
    2,780.81x = 4,173.27 × 2,239.53
  4. Step 4: Simplify right side
    2,780.81x = 9,346,163.36
  5. Step 5: Solve for x
    x = 9,346,163.36/2,780.81
  6. Step 6: Final answer
    x = 3,360.95

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1.5x scale

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.