Home / 1,639.06-2,263.52-1,401.64

Finding the Fourth Proportional to 1,639.06, 2,263.52 and 1,401.64

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Solution

The fourth proportional to 1,639.06, 2,263.52 and 1,401.64 is: 1,935.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.06 : 2,263.52 = 1,401.64 : x
  2. Step 2: Convert to fraction form
    1,639.06/2,263.52 = 1,401.64/x
  3. Step 3: Cross multiply
    1,639.06x = 2,263.52 × 1,401.64
  4. Step 4: Simplify right side
    1,639.06x = 3,172,640.17
  5. Step 5: Solve for x
    x = 3,172,640.17/1,639.06
  6. Step 6: Final answer
    x = 1,935.65

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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.