Home / 1,780.35-2,458.11-1,192.59

Finding the Fourth Proportional to 1,780.35, 2,458.11 and 1,192.59

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Solution

The fourth proportional to 1,780.35, 2,458.11 and 1,192.59 is: 1,646.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.35 : 2,458.11 = 1,192.59 : x
  2. Step 2: Convert to fraction form
    1,780.35/2,458.11 = 1,192.59/x
  3. Step 3: Cross multiply
    1,780.35x = 2,458.11 × 1,192.59
  4. Step 4: Simplify right side
    1,780.35x = 2,931,517.40
  5. Step 5: Solve for x
    x = 2,931,517.40/1,780.35
  6. Step 6: Final answer
    x = 1,646.60

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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.