Home / 5,089.64-7,634.45-1,391.72

Finding the Fourth Proportional to 5,089.64, 7,634.45 and 1,391.72

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Solution

The fourth proportional to 5,089.64, 7,634.45 and 1,391.72 is: 2,087.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,089.64 : 7,634.45 = 1,391.72 : x
  2. Step 2: Convert to fraction form
    5,089.64/7,634.45 = 1,391.72/x
  3. Step 3: Cross multiply
    5,089.64x = 7,634.45 × 1,391.72
  4. Step 4: Simplify right side
    5,089.64x = 10,624,982.06
  5. Step 5: Solve for x
    x = 10,624,982.06/5,089.64
  6. Step 6: Final answer
    x = 2,087.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.