Home / 5,145.79-7,721.55-2,513.33

Finding the Fourth Proportional to 5,145.79, 7,721.55 and 2,513.33

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Solution

The fourth proportional to 5,145.79, 7,721.55 and 2,513.33 is: 3,771.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.79 : 7,721.55 = 2,513.33 : x
  2. Step 2: Convert to fraction form
    5,145.79/7,721.55 = 2,513.33/x
  3. Step 3: Cross multiply
    5,145.79x = 7,721.55 × 2,513.33
  4. Step 4: Simplify right side
    5,145.79x = 19,406,752.09
  5. Step 5: Solve for x
    x = 19,406,752.09/5,145.79
  6. Step 6: Final answer
    x = 3,771.38

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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.