Home / 2,890.34-3,989.32-1,695.86

Finding the Fourth Proportional to 2,890.34, 3,989.32 and 1,695.86

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Solution

The fourth proportional to 2,890.34, 3,989.32 and 1,695.86 is: 2,340.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.34 : 3,989.32 = 1,695.86 : x
  2. Step 2: Convert to fraction form
    2,890.34/3,989.32 = 1,695.86/x
  3. Step 3: Cross multiply
    2,890.34x = 3,989.32 × 1,695.86
  4. Step 4: Simplify right side
    2,890.34x = 6,765,328.22
  5. Step 5: Solve for x
    x = 6,765,328.22/2,890.34
  6. Step 6: Final answer
    x = 2,340.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.