Home / 3,431.31-4,734.70-1,938.99

Finding the Fourth Proportional to 3,431.31, 4,734.70 and 1,938.99

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Solution

The fourth proportional to 3,431.31, 4,734.70 and 1,938.99 is: 2,675.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.31 : 4,734.70 = 1,938.99 : x
  2. Step 2: Convert to fraction form
    3,431.31/4,734.70 = 1,938.99/x
  3. Step 3: Cross multiply
    3,431.31x = 4,734.70 × 1,938.99
  4. Step 4: Simplify right side
    3,431.31x = 9,180,535.95
  5. Step 5: Solve for x
    x = 9,180,535.95/3,431.31
  6. Step 6: Final answer
    x = 2,675.52

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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.