Home / 5,215.31-7,197.64-2,977.52

Finding the Fourth Proportional to 5,215.31, 7,197.64 and 2,977.52

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Solution

The fourth proportional to 5,215.31, 7,197.64 and 2,977.52 is: 4,109.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.31 : 7,197.64 = 2,977.52 : x
  2. Step 2: Convert to fraction form
    5,215.31/7,197.64 = 2,977.52/x
  3. Step 3: Cross multiply
    5,215.31x = 7,197.64 × 2,977.52
  4. Step 4: Simplify right side
    5,215.31x = 21,431,117.05
  5. Step 5: Solve for x
    x = 21,431,117.05/5,215.31
  6. Step 6: Final answer
    x = 4,109.27

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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.