Home / 5,181.90-7,153.83-3,977.10

Finding the Fourth Proportional to 5,181.90, 7,153.83 and 3,977.10

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Solution

The fourth proportional to 5,181.90, 7,153.83 and 3,977.10 is: 5,490.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.90 : 7,153.83 = 3,977.10 : x
  2. Step 2: Convert to fraction form
    5,181.90/7,153.83 = 3,977.10/x
  3. Step 3: Cross multiply
    5,181.90x = 7,153.83 × 3,977.10
  4. Step 4: Simplify right side
    5,181.90x = 28,451,497.29
  5. Step 5: Solve for x
    x = 28,451,497.29/5,181.90
  6. Step 6: Final answer
    x = 5,490.55

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1.5x scale

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.