Home / 3,405.51-4,705.55-2,815.02

Finding the Fourth Proportional to 3,405.51, 4,705.55 and 2,815.02

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Solution

The fourth proportional to 3,405.51, 4,705.55 and 2,815.02 is: 3,889.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.51 : 4,705.55 = 2,815.02 : x
  2. Step 2: Convert to fraction form
    3,405.51/4,705.55 = 2,815.02/x
  3. Step 3: Cross multiply
    3,405.51x = 4,705.55 × 2,815.02
  4. Step 4: Simplify right side
    3,405.51x = 13,246,217.36
  5. Step 5: Solve for x
    x = 13,246,217.36/3,405.51
  6. Step 6: Final answer
    x = 3,889.64

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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.