Home / 8,145.09-11,236.59-5,491.53

Finding the Fourth Proportional to 8,145.09, 11,236.59 and 5,491.53

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Solution

The fourth proportional to 8,145.09, 11,236.59 and 5,491.53 is: 7,575.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.09 : 11,236.59 = 5,491.53 : x
  2. Step 2: Convert to fraction form
    8,145.09/11,236.59 = 5,491.53/x
  3. Step 3: Cross multiply
    8,145.09x = 11,236.59 × 5,491.53
  4. Step 4: Simplify right side
    8,145.09x = 61,706,071.08
  5. Step 5: Solve for x
    x = 61,706,071.08/8,145.09
  6. Step 6: Final answer
    x = 7,575.86

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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.