Home / 2,808.72-4,211.78-1,639.06

Finding the Fourth Proportional to 2,808.72, 4,211.78 and 1,639.06

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Solution

The fourth proportional to 2,808.72, 4,211.78 and 1,639.06 is: 2,457.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.72 : 4,211.78 = 1,639.06 : x
  2. Step 2: Convert to fraction form
    2,808.72/4,211.78 = 1,639.06/x
  3. Step 3: Cross multiply
    2,808.72x = 4,211.78 × 1,639.06
  4. Step 4: Simplify right side
    2,808.72x = 6,903,374.31
  5. Step 5: Solve for x
    x = 6,903,374.31/2,808.72
  6. Step 6: Final answer
    x = 2,457.84

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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.