Home / 1,410.32-2,115.68-436.28

Finding the Fourth Proportional to 1,410.32, 2,115.68 and 436.28

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Solution

The fourth proportional to 1,410.32, 2,115.68 and 436.28 is: 654.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,410.32 : 2,115.68 = 436.28 : x
  2. Step 2: Convert to fraction form
    1,410.32/2,115.68 = 436.28/x
  3. Step 3: Cross multiply
    1,410.32x = 2,115.68 × 436.28
  4. Step 4: Simplify right side
    1,410.32x = 923,028.87
  5. Step 5: Solve for x
    x = 923,028.87/1,410.32
  6. Step 6: Final answer
    x = 654.48

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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.