Home / 5,135,130.72-7,086,591.36-2,812,121.28

Finding the Fourth Proportional to 5,135,130.72, 7,086,591.36 and 2,812,121.28

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Solution

The fourth proportional to 5,135,130.72, 7,086,591.36 and 2,812,121.28 is: 3,880,788.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135,130.72 : 7,086,591.36 = 2,812,121.28 : x
  2. Step 2: Convert to fraction form
    5,135,130.72/7,086,591.36 = 2,812,121.28/x
  3. Step 3: Cross multiply
    5,135,130.72x = 7,086,591.36 × 2,812,121.28
  4. Step 4: Simplify right side
    5,135,130.72x = 19,928,354,366,120.14
  5. Step 5: Solve for x
    x = 19,928,354,366,120.14/5,135,130.72
  6. Step 6: Final answer
    x = 3,880,788.13

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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.