Home / 2,210.20-3,315.30-1,853.80

Finding the Fourth Proportional to 2,210.20, 3,315.30 and 1,853.80

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Solution

The fourth proportional to 2,210.20, 3,315.30 and 1,853.80 is: 2,780.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,210.20 : 3,315.30 = 1,853.80 : x
  2. Step 2: Convert to fraction form
    2,210.20/3,315.30 = 1,853.80/x
  3. Step 3: Cross multiply
    2,210.20x = 3,315.30 × 1,853.80
  4. Step 4: Simplify right side
    2,210.20x = 6,145,903.14
  5. Step 5: Solve for x
    x = 6,145,903.14/2,210.20
  6. Step 6: Final answer
    x = 2,780.70

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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.