Home / 1,683.40-2,528.70-1,622.20

Finding the Fourth Proportional to 1,683.40, 2,528.70 and 1,622.20

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Solution

The fourth proportional to 1,683.40, 2,528.70 and 1,622.20 is: 2,436.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,683.40 : 2,528.70 = 1,622.20 : x
  2. Step 2: Convert to fraction form
    1,683.40/2,528.70 = 1,622.20/x
  3. Step 3: Cross multiply
    1,683.40x = 2,528.70 × 1,622.20
  4. Step 4: Simplify right side
    1,683.40x = 4,102,057.14
  5. Step 5: Solve for x
    x = 4,102,057.14/1,683.40
  6. Step 6: Final answer
    x = 2,436.77

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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.