Home / 2,912.90-4,362.40-1,677.72

Finding the Fourth Proportional to 2,912.90, 4,362.40 and 1,677.72

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Solution

The fourth proportional to 2,912.90, 4,362.40 and 1,677.72 is: 2,512.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.90 : 4,362.40 = 1,677.72 : x
  2. Step 2: Convert to fraction form
    2,912.90/4,362.40 = 1,677.72/x
  3. Step 3: Cross multiply
    2,912.90x = 4,362.40 × 1,677.72
  4. Step 4: Simplify right side
    2,912.90x = 7,318,885.73
  5. Step 5: Solve for x
    x = 7,318,885.73/2,912.90
  6. Step 6: Final answer
    x = 2,512.58

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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.