Home / 5,111.20-7,051.62-3,787.12

Finding the Fourth Proportional to 5,111.20, 7,051.62 and 3,787.12

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Solution

The fourth proportional to 5,111.20, 7,051.62 and 3,787.12 is: 5,224.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.20 : 7,051.62 = 3,787.12 : x
  2. Step 2: Convert to fraction form
    5,111.20/7,051.62 = 3,787.12/x
  3. Step 3: Cross multiply
    5,111.20x = 7,051.62 × 3,787.12
  4. Step 4: Simplify right side
    5,111.20x = 26,705,331.13
  5. Step 5: Solve for x
    x = 26,705,331.13/5,111.20
  6. Step 6: Final answer
    x = 5,224.87

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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.