Home / 7,791.15-11,686.34-2,860.40

Finding the Fourth Proportional to 7,791.15, 11,686.34 and 2,860.40

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Solution

The fourth proportional to 7,791.15, 11,686.34 and 2,860.40 is: 4,290.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.15 : 11,686.34 = 2,860.40 : x
  2. Step 2: Convert to fraction form
    7,791.15/11,686.34 = 2,860.40/x
  3. Step 3: Cross multiply
    7,791.15x = 11,686.34 × 2,860.40
  4. Step 4: Simplify right side
    7,791.15x = 33,427,606.94
  5. Step 5: Solve for x
    x = 33,427,606.94/7,791.15
  6. Step 6: Final answer
    x = 4,290.46

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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.