Home / 1,245.89-1,867.80-587.43

Finding the Fourth Proportional to 1,245.89, 1,867.80 and 587.43

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Solution

The fourth proportional to 1,245.89, 1,867.80 and 587.43 is: 880.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.89 : 1,867.80 = 587.43 : x
  2. Step 2: Convert to fraction form
    1,245.89/1,867.80 = 587.43/x
  3. Step 3: Cross multiply
    1,245.89x = 1,867.80 × 587.43
  4. Step 4: Simplify right side
    1,245.89x = 1,097,201.75
  5. Step 5: Solve for x
    x = 1,097,201.75/1,245.89
  6. Step 6: Final answer
    x = 880.66

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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.