Home / 9,917.36-13,685.88-5,727.92

Finding the Fourth Proportional to 9,917.36, 13,685.88 and 5,727.92

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Solution

The fourth proportional to 9,917.36, 13,685.88 and 5,727.92 is: 7,904.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,917.36 : 13,685.88 = 5,727.92 : x
  2. Step 2: Convert to fraction form
    9,917.36/13,685.88 = 5,727.92/x
  3. Step 3: Cross multiply
    9,917.36x = 13,685.88 × 5,727.92
  4. Step 4: Simplify right side
    9,917.36x = 78,391,625.77
  5. Step 5: Solve for x
    x = 78,391,625.77/9,917.36
  6. Step 6: Final answer
    x = 7,904.49

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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.