Home / 5,431.77-7,489.46-3,540.69

Finding the Fourth Proportional to 5,431.77, 7,489.46 and 3,540.69

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Solution

The fourth proportional to 5,431.77, 7,489.46 and 3,540.69 is: 4,881.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.77 : 7,489.46 = 3,540.69 : x
  2. Step 2: Convert to fraction form
    5,431.77/7,489.46 = 3,540.69/x
  3. Step 3: Cross multiply
    5,431.77x = 7,489.46 × 3,540.69
  4. Step 4: Simplify right side
    5,431.77x = 26,517,864.98
  5. Step 5: Solve for x
    x = 26,517,864.98/5,431.77
  6. Step 6: Final answer
    x = 4,881.99

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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.