Home / 5,620.02-8,422.34-2,155.38

Finding the Fourth Proportional to 5,620.02, 8,422.34 and 2,155.38

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Solution

The fourth proportional to 5,620.02, 8,422.34 and 2,155.38 is: 3,230.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,620.02 : 8,422.34 = 2,155.38 : x
  2. Step 2: Convert to fraction form
    5,620.02/8,422.34 = 2,155.38/x
  3. Step 3: Cross multiply
    5,620.02x = 8,422.34 × 2,155.38
  4. Step 4: Simplify right side
    5,620.02x = 18,153,332.41
  5. Step 5: Solve for x
    x = 18,153,332.41/5,620.02
  6. Step 6: Final answer
    x = 3,230.12

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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.