Home / 7,144.78-9,858.63-4,490.31

Finding the Fourth Proportional to 7,144.78, 9,858.63 and 4,490.31

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Solution

The fourth proportional to 7,144.78, 9,858.63 and 4,490.31 is: 6,195.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,144.78 : 9,858.63 = 4,490.31 : x
  2. Step 2: Convert to fraction form
    7,144.78/9,858.63 = 4,490.31/x
  3. Step 3: Cross multiply
    7,144.78x = 9,858.63 × 4,490.31
  4. Step 4: Simplify right side
    7,144.78x = 44,268,304.88
  5. Step 5: Solve for x
    x = 44,268,304.88/7,144.78
  6. Step 6: Final answer
    x = 6,195.89

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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.