Home / 7,854.72-11,784.78-3,955.92

Finding the Fourth Proportional to 7,854.72, 11,784.78 and 3,955.92

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Solution

The fourth proportional to 7,854.72, 11,784.78 and 3,955.92 is: 5,935.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,854.72 : 11,784.78 = 3,955.92 : x
  2. Step 2: Convert to fraction form
    7,854.72/11,784.78 = 3,955.92/x
  3. Step 3: Cross multiply
    7,854.72x = 11,784.78 × 3,955.92
  4. Step 4: Simplify right side
    7,854.72x = 46,619,646.90
  5. Step 5: Solve for x
    x = 46,619,646.90/7,854.72
  6. Step 6: Final answer
    x = 5,935.24

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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.