Home / 6,172.81-8,521.29-3,937.75

Finding the Fourth Proportional to 6,172.81, 8,521.29 and 3,937.75

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Solution

The fourth proportional to 6,172.81, 8,521.29 and 3,937.75 is: 5,435.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,172.81 : 8,521.29 = 3,937.75 : x
  2. Step 2: Convert to fraction form
    6,172.81/8,521.29 = 3,937.75/x
  3. Step 3: Cross multiply
    6,172.81x = 8,521.29 × 3,937.75
  4. Step 4: Simplify right side
    6,172.81x = 33,554,709.70
  5. Step 5: Solve for x
    x = 33,554,709.70/6,172.81
  6. Step 6: Final answer
    x = 5,435.89

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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.