Home / 1,297.76-1,947.45-528.26

Finding the Fourth Proportional to 1,297.76, 1,947.45 and 528.26

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Solution

The fourth proportional to 1,297.76, 1,947.45 and 528.26 is: 792.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297.76 : 1,947.45 = 528.26 : x
  2. Step 2: Convert to fraction form
    1,297.76/1,947.45 = 528.26/x
  3. Step 3: Cross multiply
    1,297.76x = 1,947.45 × 528.26
  4. Step 4: Simplify right side
    1,297.76x = 1,028,759.94
  5. Step 5: Solve for x
    x = 1,028,759.94/1,297.76
  6. Step 6: Final answer
    x = 792.72

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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.