Home / 1,645.70-2,451.99-1,621.94

Finding the Fourth Proportional to 1,645.70, 2,451.99 and 1,621.94

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Solution

The fourth proportional to 1,645.70, 2,451.99 and 1,621.94 is: 2,416.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.70 : 2,451.99 = 1,621.94 : x
  2. Step 2: Convert to fraction form
    1,645.70/2,451.99 = 1,621.94/x
  3. Step 3: Cross multiply
    1,645.70x = 2,451.99 × 1,621.94
  4. Step 4: Simplify right side
    1,645.70x = 3,976,972.55
  5. Step 5: Solve for x
    x = 3,976,972.55/1,645.70
  6. Step 6: Final answer
    x = 2,416.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.