Home / 1,809.45-2,708.91-1,621.85

Finding the Fourth Proportional to 1,809.45, 2,708.91 and 1,621.85

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Solution

The fourth proportional to 1,809.45, 2,708.91 and 1,621.85 is: 2,428.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,809.45 : 2,708.91 = 1,621.85 : x
  2. Step 2: Convert to fraction form
    1,809.45/2,708.91 = 1,621.85/x
  3. Step 3: Cross multiply
    1,809.45x = 2,708.91 × 1,621.85
  4. Step 4: Simplify right side
    1,809.45x = 4,393,432.14
  5. Step 5: Solve for x
    x = 4,393,432.14/1,809.45
  6. Step 6: Final answer
    x = 2,428.05

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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.