Home / 2,705.18-4,056.31-1,388.39

Finding the Fourth Proportional to 2,705.18, 4,056.31 and 1,388.39

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Solution

The fourth proportional to 2,705.18, 4,056.31 and 1,388.39 is: 2,081.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,705.18 : 4,056.31 = 1,388.39 : x
  2. Step 2: Convert to fraction form
    2,705.18/4,056.31 = 1,388.39/x
  3. Step 3: Cross multiply
    2,705.18x = 4,056.31 × 1,388.39
  4. Step 4: Simplify right side
    2,705.18x = 5,631,740.24
  5. Step 5: Solve for x
    x = 5,631,740.24/2,705.18
  6. Step 6: Final answer
    x = 2,081.84

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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.