Home / 5,154.30-7,112.72-2,796.39

Finding the Fourth Proportional to 5,154.30, 7,112.72 and 2,796.39

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Solution

The fourth proportional to 5,154.30, 7,112.72 and 2,796.39 is: 3,858.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,154.30 : 7,112.72 = 2,796.39 : x
  2. Step 2: Convert to fraction form
    5,154.30/7,112.72 = 2,796.39/x
  3. Step 3: Cross multiply
    5,154.30x = 7,112.72 × 2,796.39
  4. Step 4: Simplify right side
    5,154.30x = 19,889,946.07
  5. Step 5: Solve for x
    x = 19,889,946.07/5,154.30
  6. Step 6: Final answer
    x = 3,858.90

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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.