Home / 3,509.82-5,261.88-1,317.32

Finding the Fourth Proportional to 3,509.82, 5,261.88 and 1,317.32

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Solution

The fourth proportional to 3,509.82, 5,261.88 and 1,317.32 is: 1,974.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,509.82 : 5,261.88 = 1,317.32 : x
  2. Step 2: Convert to fraction form
    3,509.82/5,261.88 = 1,317.32/x
  3. Step 3: Cross multiply
    3,509.82x = 5,261.88 × 1,317.32
  4. Step 4: Simplify right side
    3,509.82x = 6,931,579.76
  5. Step 5: Solve for x
    x = 6,931,579.76/3,509.82
  6. Step 6: Final answer
    x = 1,974.91

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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.