Home / 6,371.70-8,790.75-3,980.04

Finding the Fourth Proportional to 6,371.70, 8,790.75 and 3,980.04

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Solution

The fourth proportional to 6,371.70, 8,790.75 and 3,980.04 is: 5,491.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,371.70 : 8,790.75 = 3,980.04 : x
  2. Step 2: Convert to fraction form
    6,371.70/8,790.75 = 3,980.04/x
  3. Step 3: Cross multiply
    6,371.70x = 8,790.75 × 3,980.04
  4. Step 4: Simplify right side
    6,371.70x = 34,987,532.97
  5. Step 5: Solve for x
    x = 34,987,532.97/6,371.70
  6. Step 6: Final answer
    x = 5,491.08

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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.