Home / 1,918.51-2,647.29-1,079.08

Finding the Fourth Proportional to 1,918.51, 2,647.29 and 1,079.08

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Solution

The fourth proportional to 1,918.51, 2,647.29 and 1,079.08 is: 1,488.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.51 : 2,647.29 = 1,079.08 : x
  2. Step 2: Convert to fraction form
    1,918.51/2,647.29 = 1,079.08/x
  3. Step 3: Cross multiply
    1,918.51x = 2,647.29 × 1,079.08
  4. Step 4: Simplify right side
    1,918.51x = 2,856,637.69
  5. Step 5: Solve for x
    x = 2,856,637.69/1,918.51
  6. Step 6: Final answer
    x = 1,488.99

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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.