Home / 5,172.63-7,139.44-3,077.97

Finding the Fourth Proportional to 5,172.63, 7,139.44 and 3,077.97

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Solution

The fourth proportional to 5,172.63, 7,139.44 and 3,077.97 is: 4,248.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.63 : 7,139.44 = 3,077.97 : x
  2. Step 2: Convert to fraction form
    5,172.63/7,139.44 = 3,077.97/x
  3. Step 3: Cross multiply
    5,172.63x = 7,139.44 × 3,077.97
  4. Step 4: Simplify right side
    5,172.63x = 21,974,982.14
  5. Step 5: Solve for x
    x = 21,974,982.14/5,172.63
  6. Step 6: Final answer
    x = 4,248.32

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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.