Home / 7,880.12-11,822.90-3,500.64

Finding the Fourth Proportional to 7,880.12, 11,822.90 and 3,500.64

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Solution

The fourth proportional to 7,880.12, 11,822.90 and 3,500.64 is: 5,252.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.12 : 11,822.90 = 3,500.64 : x
  2. Step 2: Convert to fraction form
    7,880.12/11,822.90 = 3,500.64/x
  3. Step 3: Cross multiply
    7,880.12x = 11,822.90 × 3,500.64
  4. Step 4: Simplify right side
    7,880.12x = 41,387,699.15
  5. Step 5: Solve for x
    x = 41,387,699.15/7,880.12
  6. Step 6: Final answer
    x = 5,252.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.