Home / 9,877.20-13,629.96-5,685.36

Finding the Fourth Proportional to 9,877.20, 13,629.96 and 5,685.36

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Solution

The fourth proportional to 9,877.20, 13,629.96 and 5,685.36 is: 7,845.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,877.20 : 13,629.96 = 5,685.36 : x
  2. Step 2: Convert to fraction form
    9,877.20/13,629.96 = 5,685.36/x
  3. Step 3: Cross multiply
    9,877.20x = 13,629.96 × 5,685.36
  4. Step 4: Simplify right side
    9,877.20x = 77,491,229.39
  5. Step 5: Solve for x
    x = 77,491,229.39/9,877.20
  6. Step 6: Final answer
    x = 7,845.47

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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.