Home / 7,144.25-9,858.78-3,957.36

Finding the Fourth Proportional to 7,144.25, 9,858.78 and 3,957.36

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Solution

The fourth proportional to 7,144.25, 9,858.78 and 3,957.36 is: 5,461.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,144.25 : 9,858.78 = 3,957.36 : x
  2. Step 2: Convert to fraction form
    7,144.25/9,858.78 = 3,957.36/x
  3. Step 3: Cross multiply
    7,144.25x = 9,858.78 × 3,957.36
  4. Step 4: Simplify right side
    7,144.25x = 39,014,728.54
  5. Step 5: Solve for x
    x = 39,014,728.54/7,144.25
  6. Step 6: Final answer
    x = 5,461.00

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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.