Home / 5,620.87-8,432.21-2,111.14

Finding the Fourth Proportional to 5,620.87, 8,432.21 and 2,111.14

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Solution

The fourth proportional to 5,620.87, 8,432.21 and 2,111.14 is: 3,167.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,620.87 : 8,432.21 = 2,111.14 : x
  2. Step 2: Convert to fraction form
    5,620.87/8,432.21 = 2,111.14/x
  3. Step 3: Cross multiply
    5,620.87x = 8,432.21 × 2,111.14
  4. Step 4: Simplify right side
    5,620.87x = 17,801,544.18
  5. Step 5: Solve for x
    x = 17,801,544.18/5,620.87
  6. Step 6: Final answer
    x = 3,167.05

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1.5x scale

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.