Home / 1,621.19-2,431.26-800.03

Finding the Fourth Proportional to 1,621.19, 2,431.26 and 800.03

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Solution

The fourth proportional to 1,621.19, 2,431.26 and 800.03 is: 1,199.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.19 : 2,431.26 = 800.03 : x
  2. Step 2: Convert to fraction form
    1,621.19/2,431.26 = 800.03/x
  3. Step 3: Cross multiply
    1,621.19x = 2,431.26 × 800.03
  4. Step 4: Simplify right side
    1,621.19x = 1,945,068.78
  5. Step 5: Solve for x
    x = 1,945,068.78/1,621.19
  6. Step 6: Final answer
    x = 1,199.78

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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.