Home / 6,731.88-9,290.58-3,938.28

Finding the Fourth Proportional to 6,731.88, 9,290.58 and 3,938.28

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Solution

The fourth proportional to 6,731.88, 9,290.58 and 3,938.28 is: 5,435.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,731.88 : 9,290.58 = 3,938.28 : x
  2. Step 2: Convert to fraction form
    6,731.88/9,290.58 = 3,938.28/x
  3. Step 3: Cross multiply
    6,731.88x = 9,290.58 × 3,938.28
  4. Step 4: Simplify right side
    6,731.88x = 36,588,905.40
  5. Step 5: Solve for x
    x = 36,588,905.40/6,731.88
  6. Step 6: Final answer
    x = 5,435.17

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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.