Home / 1,640.19-2,459.39-1,445.64

Finding the Fourth Proportional to 1,640.19, 2,459.39 and 1,445.64

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Solution

The fourth proportional to 1,640.19, 2,459.39 and 1,445.64 is: 2,167.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.19 : 2,459.39 = 1,445.64 : x
  2. Step 2: Convert to fraction form
    1,640.19/2,459.39 = 1,445.64/x
  3. Step 3: Cross multiply
    1,640.19x = 2,459.39 × 1,445.64
  4. Step 4: Simplify right side
    1,640.19x = 3,555,385.33
  5. Step 5: Solve for x
    x = 3,555,385.33/1,640.19
  6. Step 6: Final answer
    x = 2,167.67

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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.