Home / 5,155.84-7,115.44-3,165.92

Finding the Fourth Proportional to 5,155.84, 7,115.44 and 3,165.92

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Solution

The fourth proportional to 5,155.84, 7,115.44 and 3,165.92 is: 4,369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.84 : 7,115.44 = 3,165.92 : x
  2. Step 2: Convert to fraction form
    5,155.84/7,115.44 = 3,165.92/x
  3. Step 3: Cross multiply
    5,155.84x = 7,115.44 × 3,165.92
  4. Step 4: Simplify right side
    5,155.84x = 22,526,913.80
  5. Step 5: Solve for x
    x = 22,526,913.80/5,155.84
  6. Step 6: Final answer
    x = 4,369.20

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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.