Home / 1,555.73-2,327.76-928.73

Finding the Fourth Proportional to 1,555.73, 2,327.76 and 928.73

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Solution

The fourth proportional to 1,555.73, 2,327.76 and 928.73 is: 1,389.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.73 : 2,327.76 = 928.73 : x
  2. Step 2: Convert to fraction form
    1,555.73/2,327.76 = 928.73/x
  3. Step 3: Cross multiply
    1,555.73x = 2,327.76 × 928.73
  4. Step 4: Simplify right side
    1,555.73x = 2,161,860.54
  5. Step 5: Solve for x
    x = 2,161,860.54/1,555.73
  6. Step 6: Final answer
    x = 1,389.61

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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.