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Finding the Fourth Proportional to 3,955.66, 5,459.22 and 3,397.98

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Solution

The fourth proportional to 3,955.66, 5,459.22 and 3,397.98 is: 4,689.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.66 : 5,459.22 = 3,397.98 : x
  2. Step 2: Convert to fraction form
    3,955.66/5,459.22 = 3,397.98/x
  3. Step 3: Cross multiply
    3,955.66x = 5,459.22 × 3,397.98
  4. Step 4: Simplify right side
    3,955.66x = 18,550,320.38
  5. Step 5: Solve for x
    x = 18,550,320.38/3,955.66
  6. Step 6: Final answer
    x = 4,689.56

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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.