Home / 5,172.17-7,137.56-2,814.32

Finding the Fourth Proportional to 5,172.17, 7,137.56 and 2,814.32

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Solution

The fourth proportional to 5,172.17, 7,137.56 and 2,814.32 is: 3,883.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.17 : 7,137.56 = 2,814.32 : x
  2. Step 2: Convert to fraction form
    5,172.17/7,137.56 = 2,814.32/x
  3. Step 3: Cross multiply
    5,172.17x = 7,137.56 × 2,814.32
  4. Step 4: Simplify right side
    5,172.17x = 20,087,328.10
  5. Step 5: Solve for x
    x = 20,087,328.10/5,172.17
  6. Step 6: Final answer
    x = 3,883.74

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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.