Home / 2,827.80-3,903.40-1,708.78

Finding the Fourth Proportional to 2,827.80, 3,903.40 and 1,708.78

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Solution

The fourth proportional to 2,827.80, 3,903.40 and 1,708.78 is: 2,358.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,827.80 : 3,903.40 = 1,708.78 : x
  2. Step 2: Convert to fraction form
    2,827.80/3,903.40 = 1,708.78/x
  3. Step 3: Cross multiply
    2,827.80x = 3,903.40 × 1,708.78
  4. Step 4: Simplify right side
    2,827.80x = 6,670,051.85
  5. Step 5: Solve for x
    x = 6,670,051.85/2,827.80
  6. Step 6: Final answer
    x = 2,358.74

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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.