Home / 1,626.76-2,440.32-1,405.20

Finding the Fourth Proportional to 1,626.76, 2,440.32 and 1,405.20

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Solution

The fourth proportional to 1,626.76, 2,440.32 and 1,405.20 is: 2,107.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,626.76 : 2,440.32 = 1,405.20 : x
  2. Step 2: Convert to fraction form
    1,626.76/2,440.32 = 1,405.20/x
  3. Step 3: Cross multiply
    1,626.76x = 2,440.32 × 1,405.20
  4. Step 4: Simplify right side
    1,626.76x = 3,429,137.66
  5. Step 5: Solve for x
    x = 3,429,137.66/1,626.76
  6. Step 6: Final answer
    x = 2,107.96

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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.