Home / 5,618.75-8,430.57-2,158.43

Finding the Fourth Proportional to 5,618.75, 8,430.57 and 2,158.43

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Solution

The fourth proportional to 5,618.75, 8,430.57 and 2,158.43 is: 3,238.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.75 : 8,430.57 = 2,158.43 : x
  2. Step 2: Convert to fraction form
    5,618.75/8,430.57 = 2,158.43/x
  3. Step 3: Cross multiply
    5,618.75x = 8,430.57 × 2,158.43
  4. Step 4: Simplify right side
    5,618.75x = 18,196,753.05
  5. Step 5: Solve for x
    x = 18,196,753.05/5,618.75
  6. Step 6: Final answer
    x = 3,238.58

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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.