Home / 5,172.29-7,759.13-1,661.12

Finding the Fourth Proportional to 5,172.29, 7,759.13 and 1,661.12

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Solution

The fourth proportional to 5,172.29, 7,759.13 and 1,661.12 is: 2,491.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.29 : 7,759.13 = 1,661.12 : x
  2. Step 2: Convert to fraction form
    5,172.29/7,759.13 = 1,661.12/x
  3. Step 3: Cross multiply
    5,172.29x = 7,759.13 × 1,661.12
  4. Step 4: Simplify right side
    5,172.29x = 12,888,857.12
  5. Step 5: Solve for x
    x = 12,888,857.12/5,172.29
  6. Step 6: Final answer
    x = 2,491.91

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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.