Home / 1,926.87-2,659.49-1,218.26

Finding the Fourth Proportional to 1,926.87, 2,659.49 and 1,218.26

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Solution

The fourth proportional to 1,926.87, 2,659.49 and 1,218.26 is: 1,681.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926.87 : 2,659.49 = 1,218.26 : x
  2. Step 2: Convert to fraction form
    1,926.87/2,659.49 = 1,218.26/x
  3. Step 3: Cross multiply
    1,926.87x = 2,659.49 × 1,218.26
  4. Step 4: Simplify right side
    1,926.87x = 3,239,950.29
  5. Step 5: Solve for x
    x = 3,239,950.29/1,926.87
  6. Step 6: Final answer
    x = 1,681.46

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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.