Home / 7,839.19-11,751.29-2,907.51

Finding the Fourth Proportional to 7,839.19, 11,751.29 and 2,907.51

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Solution

The fourth proportional to 7,839.19, 11,751.29 and 2,907.51 is: 4,358.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,839.19 : 11,751.29 = 2,907.51 : x
  2. Step 2: Convert to fraction form
    7,839.19/11,751.29 = 2,907.51/x
  3. Step 3: Cross multiply
    7,839.19x = 11,751.29 × 2,907.51
  4. Step 4: Simplify right side
    7,839.19x = 34,166,993.19
  5. Step 5: Solve for x
    x = 34,166,993.19/7,839.19
  6. Step 6: Final answer
    x = 4,358.49

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1.5x scale

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.