Home / 1,449.09-2,173.50-409.05

Finding the Fourth Proportional to 1,449.09, 2,173.50 and 409.05

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Solution

The fourth proportional to 1,449.09, 2,173.50 and 409.05 is: 613.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.09 : 2,173.50 = 409.05 : x
  2. Step 2: Convert to fraction form
    1,449.09/2,173.50 = 409.05/x
  3. Step 3: Cross multiply
    1,449.09x = 2,173.50 × 409.05
  4. Step 4: Simplify right side
    1,449.09x = 889,070.18
  5. Step 5: Solve for x
    x = 889,070.18/1,449.09
  6. Step 6: Final answer
    x = 613.54

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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.