Home / 5,272.21-7,275.38-2,913.90

Finding the Fourth Proportional to 5,272.21, 7,275.38 and 2,913.90

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Solution

The fourth proportional to 5,272.21, 7,275.38 and 2,913.90 is: 4,021.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,272.21 : 7,275.38 = 2,913.90 : x
  2. Step 2: Convert to fraction form
    5,272.21/7,275.38 = 2,913.90/x
  3. Step 3: Cross multiply
    5,272.21x = 7,275.38 × 2,913.90
  4. Step 4: Simplify right side
    5,272.21x = 21,199,729.78
  5. Step 5: Solve for x
    x = 21,199,729.78/5,272.21
  6. Step 6: Final answer
    x = 4,021.03

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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.