Home / 5,135.31-7,701.21-1,671.75

Finding the Fourth Proportional to 5,135.31, 7,701.21 and 1,671.75

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Solution

The fourth proportional to 5,135.31, 7,701.21 and 1,671.75 is: 2,507.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.31 : 7,701.21 = 1,671.75 : x
  2. Step 2: Convert to fraction form
    5,135.31/7,701.21 = 1,671.75/x
  3. Step 3: Cross multiply
    5,135.31x = 7,701.21 × 1,671.75
  4. Step 4: Simplify right side
    5,135.31x = 12,874,497.82
  5. Step 5: Solve for x
    x = 12,874,497.82/5,135.31
  6. Step 6: Final answer
    x = 2,507.05

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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.