Home / 1,465.21-2,198.40-881.32

Finding the Fourth Proportional to 1,465.21, 2,198.40 and 881.32

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Solution

The fourth proportional to 1,465.21, 2,198.40 and 881.32 is: 1,322.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,465.21 : 2,198.40 = 881.32 : x
  2. Step 2: Convert to fraction form
    1,465.21/2,198.40 = 881.32/x
  3. Step 3: Cross multiply
    1,465.21x = 2,198.40 × 881.32
  4. Step 4: Simplify right side
    1,465.21x = 1,937,493.89
  5. Step 5: Solve for x
    x = 1,937,493.89/1,465.21
  6. Step 6: Final answer
    x = 1,322.33

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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.