Home / 2,839.40-4,253.70-1,683.80

Finding the Fourth Proportional to 2,839.40, 4,253.70 and 1,683.80

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Solution

The fourth proportional to 2,839.40, 4,253.70 and 1,683.80 is: 2,522.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.40 : 4,253.70 = 1,683.80 : x
  2. Step 2: Convert to fraction form
    2,839.40/4,253.70 = 1,683.80/x
  3. Step 3: Cross multiply
    2,839.40x = 4,253.70 × 1,683.80
  4. Step 4: Simplify right side
    2,839.40x = 7,162,380.06
  5. Step 5: Solve for x
    x = 7,162,380.06/2,839.40
  6. Step 6: Final answer
    x = 2,522.50

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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.