Home / 3,455.36-5,185.20-1,403.36

Finding the Fourth Proportional to 3,455.36, 5,185.20 and 1,403.36

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Solution

The fourth proportional to 3,455.36, 5,185.20 and 1,403.36 is: 2,105.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.36 : 5,185.20 = 1,403.36 : x
  2. Step 2: Convert to fraction form
    3,455.36/5,185.20 = 1,403.36/x
  3. Step 3: Cross multiply
    3,455.36x = 5,185.20 × 1,403.36
  4. Step 4: Simplify right side
    3,455.36x = 7,276,702.27
  5. Step 5: Solve for x
    x = 7,276,702.27/3,455.36
  6. Step 6: Final answer
    x = 2,105.92

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1.5x scale

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.