Home / 5,155.28-7,111.94-3,165.11

Finding the Fourth Proportional to 5,155.28, 7,111.94 and 3,165.11

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Solution

The fourth proportional to 5,155.28, 7,111.94 and 3,165.11 is: 4,366.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.28 : 7,111.94 = 3,165.11 : x
  2. Step 2: Convert to fraction form
    5,155.28/7,111.94 = 3,165.11/x
  3. Step 3: Cross multiply
    5,155.28x = 7,111.94 × 3,165.11
  4. Step 4: Simplify right side
    5,155.28x = 22,510,021.03
  5. Step 5: Solve for x
    x = 22,510,021.03/5,155.28
  6. Step 6: Final answer
    x = 4,366.41

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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.