Home / 3,790.40-5,680.56-1,709.60

Finding the Fourth Proportional to 3,790.40, 5,680.56 and 1,709.60

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Solution

The fourth proportional to 3,790.40, 5,680.56 and 1,709.60 is: 2,562.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.40 : 5,680.56 = 1,709.60 : x
  2. Step 2: Convert to fraction form
    3,790.40/5,680.56 = 1,709.60/x
  3. Step 3: Cross multiply
    3,790.40x = 5,680.56 × 1,709.60
  4. Step 4: Simplify right side
    3,790.40x = 9,711,485.38
  5. Step 5: Solve for x
    x = 9,711,485.38/3,790.40
  6. Step 6: Final answer
    x = 2,562.13

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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.