Home / 1,231.23-1,845.38-710.15

Finding the Fourth Proportional to 1,231.23, 1,845.38 and 710.15

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Solution

The fourth proportional to 1,231.23, 1,845.38 and 710.15 is: 1,064.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.23 : 1,845.38 = 710.15 : x
  2. Step 2: Convert to fraction form
    1,231.23/1,845.38 = 710.15/x
  3. Step 3: Cross multiply
    1,231.23x = 1,845.38 × 710.15
  4. Step 4: Simplify right side
    1,231.23x = 1,310,503.00
  5. Step 5: Solve for x
    x = 1,310,503.00/1,231.23
  6. Step 6: Final answer
    x = 1,064.39

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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.