Home / 9,991.07-13,788.13-5,743.51

Finding the Fourth Proportional to 9,991.07, 13,788.13 and 5,743.51

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Solution

The fourth proportional to 9,991.07, 13,788.13 and 5,743.51 is: 7,926.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,991.07 : 13,788.13 = 5,743.51 : x
  2. Step 2: Convert to fraction form
    9,991.07/13,788.13 = 5,743.51/x
  3. Step 3: Cross multiply
    9,991.07x = 13,788.13 × 5,743.51
  4. Step 4: Simplify right side
    9,991.07x = 79,192,242.42
  5. Step 5: Solve for x
    x = 79,192,242.42/9,991.07
  6. Step 6: Final answer
    x = 7,926.30

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1.5x scale

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.