Home / 8,922.66-12,313.27-5,385.18

Finding the Fourth Proportional to 8,922.66, 12,313.27 and 5,385.18

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Solution

The fourth proportional to 8,922.66, 12,313.27 and 5,385.18 is: 7,431.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,922.66 : 12,313.27 = 5,385.18 : x
  2. Step 2: Convert to fraction form
    8,922.66/12,313.27 = 5,385.18/x
  3. Step 3: Cross multiply
    8,922.66x = 12,313.27 × 5,385.18
  4. Step 4: Simplify right side
    8,922.66x = 66,309,197.95
  5. Step 5: Solve for x
    x = 66,309,197.95/8,922.66
  6. Step 6: Final answer
    x = 7,431.55

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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.