Home / 3,953.76-5,456.04-2,185.35

Finding the Fourth Proportional to 3,953.76, 5,456.04 and 2,185.35

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Solution

The fourth proportional to 3,953.76, 5,456.04 and 2,185.35 is: 3,015.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.76 : 5,456.04 = 2,185.35 : x
  2. Step 2: Convert to fraction form
    3,953.76/5,456.04 = 2,185.35/x
  3. Step 3: Cross multiply
    3,953.76x = 5,456.04 × 2,185.35
  4. Step 4: Simplify right side
    3,953.76x = 11,923,357.01
  5. Step 5: Solve for x
    x = 11,923,357.01/3,953.76
  6. Step 6: Final answer
    x = 3,015.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.