Home / 9,111.50-13,672.95-3,917.36

Finding the Fourth Proportional to 9,111.50, 13,672.95 and 3,917.36

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Solution

The fourth proportional to 9,111.50, 13,672.95 and 3,917.36 is: 5,878.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,111.50 : 13,672.95 = 3,917.36 : x
  2. Step 2: Convert to fraction form
    9,111.50/13,672.95 = 3,917.36/x
  3. Step 3: Cross multiply
    9,111.50x = 13,672.95 × 3,917.36
  4. Step 4: Simplify right side
    9,111.50x = 53,561,867.41
  5. Step 5: Solve for x
    x = 53,561,867.41/9,111.50
  6. Step 6: Final answer
    x = 5,878.49

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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.