Home / 5,172.16-7,137.56-2,814.30

Finding the Fourth Proportional to 5,172.16, 7,137.56 and 2,814.30

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Solution

The fourth proportional to 5,172.16, 7,137.56 and 2,814.30 is: 3,883.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.16 : 7,137.56 = 2,814.30 : x
  2. Step 2: Convert to fraction form
    5,172.16/7,137.56 = 2,814.30/x
  3. Step 3: Cross multiply
    5,172.16x = 7,137.56 × 2,814.30
  4. Step 4: Simplify right side
    5,172.16x = 20,087,235.11
  5. Step 5: Solve for x
    x = 20,087,235.11/5,172.16
  6. Step 6: Final answer
    x = 3,883.72

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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.