Home / 5,126.16-7,072.68-2,887.90

Finding the Fourth Proportional to 5,126.16, 7,072.68 and 2,887.90

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Solution

The fourth proportional to 5,126.16, 7,072.68 and 2,887.90 is: 3,984.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.16 : 7,072.68 = 2,887.90 : x
  2. Step 2: Convert to fraction form
    5,126.16/7,072.68 = 2,887.90/x
  3. Step 3: Cross multiply
    5,126.16x = 7,072.68 × 2,887.90
  4. Step 4: Simplify right side
    5,126.16x = 20,425,192.57
  5. Step 5: Solve for x
    x = 20,425,192.57/5,126.16
  6. Step 6: Final answer
    x = 3,984.50

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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.