Home / 1,814.97-2,503.80-1,225.70

Finding the Fourth Proportional to 1,814.97, 2,503.80 and 1,225.70

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Solution

The fourth proportional to 1,814.97, 2,503.80 and 1,225.70 is: 1,690.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,814.97 : 2,503.80 = 1,225.70 : x
  2. Step 2: Convert to fraction form
    1,814.97/2,503.80 = 1,225.70/x
  3. Step 3: Cross multiply
    1,814.97x = 2,503.80 × 1,225.70
  4. Step 4: Simplify right side
    1,814.97x = 3,068,907.66
  5. Step 5: Solve for x
    x = 3,068,907.66/1,814.97
  6. Step 6: Final answer
    x = 1,690.89

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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.