Home / 9,884.31-13,638.83-5,691.75

Finding the Fourth Proportional to 9,884.31, 13,638.83 and 5,691.75

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Solution

The fourth proportional to 9,884.31, 13,638.83 and 5,691.75 is: 7,853.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,884.31 : 13,638.83 = 5,691.75 : x
  2. Step 2: Convert to fraction form
    9,884.31/13,638.83 = 5,691.75/x
  3. Step 3: Cross multiply
    9,884.31x = 13,638.83 × 5,691.75
  4. Step 4: Simplify right side
    9,884.31x = 77,628,782.19
  5. Step 5: Solve for x
    x = 77,628,782.19/9,884.31
  6. Step 6: Final answer
    x = 7,853.74

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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.