Home / 5,618.95-8,428.83-2,156.20

Finding the Fourth Proportional to 5,618.95, 8,428.83 and 2,156.20

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Solution

The fourth proportional to 5,618.95, 8,428.83 and 2,156.20 is: 3,234.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.95 : 8,428.83 = 2,156.20 : x
  2. Step 2: Convert to fraction form
    5,618.95/8,428.83 = 2,156.20/x
  3. Step 3: Cross multiply
    5,618.95x = 8,428.83 × 2,156.20
  4. Step 4: Simplify right side
    5,618.95x = 18,174,279.69
  5. Step 5: Solve for x
    x = 18,174,279.69/5,618.95
  6. Step 6: Final answer
    x = 3,234.46

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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.