Home / 1,708.15-2,560.40-1,219.72

Finding the Fourth Proportional to 1,708.15, 2,560.40 and 1,219.72

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Solution

The fourth proportional to 1,708.15, 2,560.40 and 1,219.72 is: 1,828.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,708.15 : 2,560.40 = 1,219.72 : x
  2. Step 2: Convert to fraction form
    1,708.15/2,560.40 = 1,219.72/x
  3. Step 3: Cross multiply
    1,708.15x = 2,560.40 × 1,219.72
  4. Step 4: Simplify right side
    1,708.15x = 3,122,958.59
  5. Step 5: Solve for x
    x = 3,122,958.59/1,708.15
  6. Step 6: Final answer
    x = 1,828.27

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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.