Home / 3,818.37-5,728.65-1,221.51

Finding the Fourth Proportional to 3,818.37, 5,728.65 and 1,221.51

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Solution

The fourth proportional to 3,818.37, 5,728.65 and 1,221.51 is: 1,832.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818.37 : 5,728.65 = 1,221.51 : x
  2. Step 2: Convert to fraction form
    3,818.37/5,728.65 = 1,221.51/x
  3. Step 3: Cross multiply
    3,818.37x = 5,728.65 × 1,221.51
  4. Step 4: Simplify right side
    3,818.37x = 6,997,603.26
  5. Step 5: Solve for x
    x = 6,997,603.26/3,818.37
  6. Step 6: Final answer
    x = 1,832.62

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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.