Home / 1,657.18-2,486.58-683.56

Finding the Fourth Proportional to 1,657.18, 2,486.58 and 683.56

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Solution

The fourth proportional to 1,657.18, 2,486.58 and 683.56 is: 1,025.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.18 : 2,486.58 = 683.56 : x
  2. Step 2: Convert to fraction form
    1,657.18/2,486.58 = 683.56/x
  3. Step 3: Cross multiply
    1,657.18x = 2,486.58 × 683.56
  4. Step 4: Simplify right side
    1,657.18x = 1,699,726.62
  5. Step 5: Solve for x
    x = 1,699,726.62/1,657.18
  6. Step 6: Final answer
    x = 1,025.67

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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.