Home / 4,750.64-7,127.63-2,120.03

Finding the Fourth Proportional to 4,750.64, 7,127.63 and 2,120.03

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Solution

The fourth proportional to 4,750.64, 7,127.63 and 2,120.03 is: 3,180.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,750.64 : 7,127.63 = 2,120.03 : x
  2. Step 2: Convert to fraction form
    4,750.64/7,127.63 = 2,120.03/x
  3. Step 3: Cross multiply
    4,750.64x = 7,127.63 × 2,120.03
  4. Step 4: Simplify right side
    4,750.64x = 15,110,812.55
  5. Step 5: Solve for x
    x = 15,110,812.55/4,750.64
  6. Step 6: Final answer
    x = 3,180.79

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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.