Home / 1,673.12-2,309.28-1,083.80

Finding the Fourth Proportional to 1,673.12, 2,309.28 and 1,083.80

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Solution

The fourth proportional to 1,673.12, 2,309.28 and 1,083.80 is: 1,495.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673.12 : 2,309.28 = 1,083.80 : x
  2. Step 2: Convert to fraction form
    1,673.12/2,309.28 = 1,083.80/x
  3. Step 3: Cross multiply
    1,673.12x = 2,309.28 × 1,083.80
  4. Step 4: Simplify right side
    1,673.12x = 2,502,797.66
  5. Step 5: Solve for x
    x = 2,502,797.66/1,673.12
  6. Step 6: Final answer
    x = 1,495.89

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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.