Home / 1,266.40-1,886.61-1,219.96

Finding the Fourth Proportional to 1,266.40, 1,886.61 and 1,219.96

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Solution

The fourth proportional to 1,266.40, 1,886.61 and 1,219.96 is: 1,817.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.40 : 1,886.61 = 1,219.96 : x
  2. Step 2: Convert to fraction form
    1,266.40/1,886.61 = 1,219.96/x
  3. Step 3: Cross multiply
    1,266.40x = 1,886.61 × 1,219.96
  4. Step 4: Simplify right side
    1,266.40x = 2,301,588.74
  5. Step 5: Solve for x
    x = 2,301,588.74/1,266.40
  6. Step 6: Final answer
    x = 1,817.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.