Home / 3,657.21-5,485.86-1,317.33

Finding the Fourth Proportional to 3,657.21, 5,485.86 and 1,317.33

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Solution

The fourth proportional to 3,657.21, 5,485.86 and 1,317.33 is: 1,976.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,657.21 : 5,485.86 = 1,317.33 : x
  2. Step 2: Convert to fraction form
    3,657.21/5,485.86 = 1,317.33/x
  3. Step 3: Cross multiply
    3,657.21x = 5,485.86 × 1,317.33
  4. Step 4: Simplify right side
    3,657.21x = 7,226,687.95
  5. Step 5: Solve for x
    x = 7,226,687.95/3,657.21
  6. Step 6: Final answer
    x = 1,976.01

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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.