Home / 1,296.56-1,790.52-1,223.84

Finding the Fourth Proportional to 1,296.56, 1,790.52 and 1,223.84

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Solution

The fourth proportional to 1,296.56, 1,790.52 and 1,223.84 is: 1,690.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.56 : 1,790.52 = 1,223.84 : x
  2. Step 2: Convert to fraction form
    1,296.56/1,790.52 = 1,223.84/x
  3. Step 3: Cross multiply
    1,296.56x = 1,790.52 × 1,223.84
  4. Step 4: Simplify right side
    1,296.56x = 2,191,310.00
  5. Step 5: Solve for x
    x = 2,191,310.00/1,296.56
  6. Step 6: Final answer
    x = 1,690.10

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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.