Home / 1,911.69-2,637.65-1,125.59

Finding the Fourth Proportional to 1,911.69, 2,637.65 and 1,125.59

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Solution

The fourth proportional to 1,911.69, 2,637.65 and 1,125.59 is: 1,553.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.69 : 2,637.65 = 1,125.59 : x
  2. Step 2: Convert to fraction form
    1,911.69/2,637.65 = 1,125.59/x
  3. Step 3: Cross multiply
    1,911.69x = 2,637.65 × 1,125.59
  4. Step 4: Simplify right side
    1,911.69x = 2,968,902.09
  5. Step 5: Solve for x
    x = 2,968,902.09/1,911.69
  6. Step 6: Final answer
    x = 1,553.02

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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.