Home / 8,619.41-11,889.79-5,431.46

Finding the Fourth Proportional to 8,619.41, 11,889.79 and 5,431.46

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Solution

The fourth proportional to 8,619.41, 11,889.79 and 5,431.46 is: 7,492.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.41 : 11,889.79 = 5,431.46 : x
  2. Step 2: Convert to fraction form
    8,619.41/11,889.79 = 5,431.46/x
  3. Step 3: Cross multiply
    8,619.41x = 11,889.79 × 5,431.46
  4. Step 4: Simplify right side
    8,619.41x = 64,578,845.77
  5. Step 5: Solve for x
    x = 64,578,845.77/8,619.41
  6. Step 6: Final answer
    x = 7,492.26

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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.