Home / 3,486.32-5,228.48-1,818.72

Finding the Fourth Proportional to 3,486.32, 5,228.48 and 1,818.72

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Solution

The fourth proportional to 3,486.32, 5,228.48 and 1,818.72 is: 2,727.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.32 : 5,228.48 = 1,818.72 : x
  2. Step 2: Convert to fraction form
    3,486.32/5,228.48 = 1,818.72/x
  3. Step 3: Cross multiply
    3,486.32x = 5,228.48 × 1,818.72
  4. Step 4: Simplify right side
    3,486.32x = 9,509,141.15
  5. Step 5: Solve for x
    x = 9,509,141.15/3,486.32
  6. Step 6: Final answer
    x = 2,727.56

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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.