Home / 8,940.65-12,334.82-5,402.57

Finding the Fourth Proportional to 8,940.65, 12,334.82 and 5,402.57

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Solution

The fourth proportional to 8,940.65, 12,334.82 and 5,402.57 is: 7,453.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,940.65 : 12,334.82 = 5,402.57 : x
  2. Step 2: Convert to fraction form
    8,940.65/12,334.82 = 5,402.57/x
  3. Step 3: Cross multiply
    8,940.65x = 12,334.82 × 5,402.57
  4. Step 4: Simplify right side
    8,940.65x = 66,639,639.80
  5. Step 5: Solve for x
    x = 66,639,639.80/8,940.65
  6. Step 6: Final answer
    x = 7,453.56

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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.