Home / 1,786.50-2,465.37-1,000.55

Finding the Fourth Proportional to 1,786.50, 2,465.37 and 1,000.55

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Solution

The fourth proportional to 1,786.50, 2,465.37 and 1,000.55 is: 1,380.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786.50 : 2,465.37 = 1,000.55 : x
  2. Step 2: Convert to fraction form
    1,786.50/2,465.37 = 1,000.55/x
  3. Step 3: Cross multiply
    1,786.50x = 2,465.37 × 1,000.55
  4. Step 4: Simplify right side
    1,786.50x = 2,466,713.63
  5. Step 5: Solve for x
    x = 2,466,713.63/1,786.50
  6. Step 6: Final answer
    x = 1,380.75

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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.