Home / 1,758.90-2,639.63-1,297.92

Finding the Fourth Proportional to 1,758.90, 2,639.63 and 1,297.92

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Solution

The fourth proportional to 1,758.90, 2,639.63 and 1,297.92 is: 1,947.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,758.90 : 2,639.63 = 1,297.92 : x
  2. Step 2: Convert to fraction form
    1,758.90/2,639.63 = 1,297.92/x
  3. Step 3: Cross multiply
    1,758.90x = 2,639.63 × 1,297.92
  4. Step 4: Simplify right side
    1,758.90x = 3,426,028.57
  5. Step 5: Solve for x
    x = 3,426,028.57/1,758.90
  6. Step 6: Final answer
    x = 1,947.82

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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.