Home / 1,704.40-2,555.04-826.72

Finding the Fourth Proportional to 1,704.40, 2,555.04 and 826.72

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Solution

The fourth proportional to 1,704.40, 2,555.04 and 826.72 is: 1,239.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,704.40 : 2,555.04 = 826.72 : x
  2. Step 2: Convert to fraction form
    1,704.40/2,555.04 = 826.72/x
  3. Step 3: Cross multiply
    1,704.40x = 2,555.04 × 826.72
  4. Step 4: Simplify right side
    1,704.40x = 2,112,302.67
  5. Step 5: Solve for x
    x = 2,112,302.67/1,704.40
  6. Step 6: Final answer
    x = 1,239.32

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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.