Home / 5,138.77-7,702.69-2,671.11

Finding the Fourth Proportional to 5,138.77, 7,702.69 and 2,671.11

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Solution

The fourth proportional to 5,138.77, 7,702.69 and 2,671.11 is: 4,003.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.77 : 7,702.69 = 2,671.11 : x
  2. Step 2: Convert to fraction form
    5,138.77/7,702.69 = 2,671.11/x
  3. Step 3: Cross multiply
    5,138.77x = 7,702.69 × 2,671.11
  4. Step 4: Simplify right side
    5,138.77x = 20,574,680.42
  5. Step 5: Solve for x
    x = 20,574,680.42/5,138.77
  6. Step 6: Final answer
    x = 4,003.81

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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.