Home / 8,955.36-13,431.83-3,111.21

Finding the Fourth Proportional to 8,955.36, 13,431.83 and 3,111.21

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Solution

The fourth proportional to 8,955.36, 13,431.83 and 3,111.21 is: 4,666.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,955.36 : 13,431.83 = 3,111.21 : x
  2. Step 2: Convert to fraction form
    8,955.36/13,431.83 = 3,111.21/x
  3. Step 3: Cross multiply
    8,955.36x = 13,431.83 × 3,111.21
  4. Step 4: Simplify right side
    8,955.36x = 41,789,228.26
  5. Step 5: Solve for x
    x = 41,789,228.26/8,955.36
  6. Step 6: Final answer
    x = 4,666.39

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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.