Home / 8,922.58-12,313.49-5,385.11

Finding the Fourth Proportional to 8,922.58, 12,313.49 and 5,385.11

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Solution

The fourth proportional to 8,922.58, 12,313.49 and 5,385.11 is: 7,431.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,922.58 : 12,313.49 = 5,385.11 : x
  2. Step 2: Convert to fraction form
    8,922.58/12,313.49 = 5,385.11/x
  3. Step 3: Cross multiply
    8,922.58x = 12,313.49 × 5,385.11
  4. Step 4: Simplify right side
    8,922.58x = 66,309,409.64
  5. Step 5: Solve for x
    x = 66,309,409.64/8,922.58
  6. Step 6: Final answer
    x = 7,431.64

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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.