Home / 1,788.21-2,681.37-555.39

Finding the Fourth Proportional to 1,788.21, 2,681.37 and 555.39

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Solution

The fourth proportional to 1,788.21, 2,681.37 and 555.39 is: 832.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.21 : 2,681.37 = 555.39 : x
  2. Step 2: Convert to fraction form
    1,788.21/2,681.37 = 555.39/x
  3. Step 3: Cross multiply
    1,788.21x = 2,681.37 × 555.39
  4. Step 4: Simplify right side
    1,788.21x = 1,489,206.08
  5. Step 5: Solve for x
    x = 1,489,206.08/1,788.21
  6. Step 6: Final answer
    x = 832.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.