Home / 8,940.66-12,338.43-5,403.18

Finding the Fourth Proportional to 8,940.66, 12,338.43 and 5,403.18

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Solution

The fourth proportional to 8,940.66, 12,338.43 and 5,403.18 is: 7,456.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,940.66 : 12,338.43 = 5,403.18 : x
  2. Step 2: Convert to fraction form
    8,940.66/12,338.43 = 5,403.18/x
  3. Step 3: Cross multiply
    8,940.66x = 12,338.43 × 5,403.18
  4. Step 4: Simplify right side
    8,940.66x = 66,666,758.21
  5. Step 5: Solve for x
    x = 66,666,758.21/8,940.66
  6. Step 6: Final answer
    x = 7,456.58

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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.