Home / 2,721.10-4,081.65-1,900.30

Finding the Fourth Proportional to 2,721.10, 4,081.65 and 1,900.30

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Solution

The fourth proportional to 2,721.10, 4,081.65 and 1,900.30 is: 2,850.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.10 : 4,081.65 = 1,900.30 : x
  2. Step 2: Convert to fraction form
    2,721.10/4,081.65 = 1,900.30/x
  3. Step 3: Cross multiply
    2,721.10x = 4,081.65 × 1,900.30
  4. Step 4: Simplify right side
    2,721.10x = 7,756,359.50
  5. Step 5: Solve for x
    x = 7,756,359.50/2,721.10
  6. Step 6: Final answer
    x = 2,850.45

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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.