Home / 1,247.23-1,717-1,091.89

Finding the Fourth Proportional to 1,247.23, 1,717 and 1,091.89

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Solution

The fourth proportional to 1,247.23, 1,717 and 1,091.89 is: 1,503.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.23 : 1,717 = 1,091.89 : x
  2. Step 2: Convert to fraction form
    1,247.23/1,717 = 1,091.89/x
  3. Step 3: Cross multiply
    1,247.23x = 1,717 × 1,091.89
  4. Step 4: Simplify right side
    1,247.23x = 1,874,775.13
  5. Step 5: Solve for x
    x = 1,874,775.13/1,247.23
  6. Step 6: Final answer
    x = 1,503.15

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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.