Home / 5,428.09-7,486.65-3,940.93

Finding the Fourth Proportional to 5,428.09, 7,486.65 and 3,940.93

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Solution

The fourth proportional to 5,428.09, 7,486.65 and 3,940.93 is: 5,435.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.09 : 7,486.65 = 3,940.93 : x
  2. Step 2: Convert to fraction form
    5,428.09/7,486.65 = 3,940.93/x
  3. Step 3: Cross multiply
    5,428.09x = 7,486.65 × 3,940.93
  4. Step 4: Simplify right side
    5,428.09x = 29,504,363.58
  5. Step 5: Solve for x
    x = 29,504,363.58/5,428.09
  6. Step 6: Final answer
    x = 5,435.50

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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.