Home / 2,938.50-4,406.70-1,378.23

Finding the Fourth Proportional to 2,938.50, 4,406.70 and 1,378.23

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Solution

The fourth proportional to 2,938.50, 4,406.70 and 1,378.23 is: 2,066.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.50 : 4,406.70 = 1,378.23 : x
  2. Step 2: Convert to fraction form
    2,938.50/4,406.70 = 1,378.23/x
  3. Step 3: Cross multiply
    2,938.50x = 4,406.70 × 1,378.23
  4. Step 4: Simplify right side
    2,938.50x = 6,073,446.14
  5. Step 5: Solve for x
    x = 6,073,446.14/2,938.50
  6. Step 6: Final answer
    x = 2,066.85

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1.5x scale

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.