Home / 1,250.21-1,725.99-1,111.79

Finding the Fourth Proportional to 1,250.21, 1,725.99 and 1,111.79

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Solution

The fourth proportional to 1,250.21, 1,725.99 and 1,111.79 is: 1,534.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,250.21 : 1,725.99 = 1,111.79 : x
  2. Step 2: Convert to fraction form
    1,250.21/1,725.99 = 1,111.79/x
  3. Step 3: Cross multiply
    1,250.21x = 1,725.99 × 1,111.79
  4. Step 4: Simplify right side
    1,250.21x = 1,918,938.42
  5. Step 5: Solve for x
    x = 1,918,938.42/1,250.21
  6. Step 6: Final answer
    x = 1,534.89

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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.