Home / 7,747.88-11,621.81-3,130.88

Finding the Fourth Proportional to 7,747.88, 11,621.81 and 3,130.88

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Solution

The fourth proportional to 7,747.88, 11,621.81 and 3,130.88 is: 4,696.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,747.88 : 11,621.81 = 3,130.88 : x
  2. Step 2: Convert to fraction form
    7,747.88/11,621.81 = 3,130.88/x
  3. Step 3: Cross multiply
    7,747.88x = 11,621.81 × 3,130.88
  4. Step 4: Simplify right side
    7,747.88x = 36,386,442.21
  5. Step 5: Solve for x
    x = 36,386,442.21/7,747.88
  6. Step 6: Final answer
    x = 4,696.31

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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.