Home / 1,410.38-2,115.83-436.25

Finding the Fourth Proportional to 1,410.38, 2,115.83 and 436.25

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Solution

The fourth proportional to 1,410.38, 2,115.83 and 436.25 is: 654.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,410.38 : 2,115.83 = 436.25 : x
  2. Step 2: Convert to fraction form
    1,410.38/2,115.83 = 436.25/x
  3. Step 3: Cross multiply
    1,410.38x = 2,115.83 × 436.25
  4. Step 4: Simplify right side
    1,410.38x = 923,018.08
  5. Step 5: Solve for x
    x = 923,018.08/1,410.38
  6. Step 6: Final answer
    x = 654.45

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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.