Home / 6,418.58-9,631.51-5,128.25

Finding the Fourth Proportional to 6,418.58, 9,631.51 and 5,128.25

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Solution

The fourth proportional to 6,418.58, 9,631.51 and 5,128.25 is: 7,695.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,418.58 : 9,631.51 = 5,128.25 : x
  2. Step 2: Convert to fraction form
    6,418.58/9,631.51 = 5,128.25/x
  3. Step 3: Cross multiply
    6,418.58x = 9,631.51 × 5,128.25
  4. Step 4: Simplify right side
    6,418.58x = 49,392,730.18
  5. Step 5: Solve for x
    x = 49,392,730.18/6,418.58
  6. Step 6: Final answer
    x = 7,695.28

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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.