Home / 5,156.35-7,115.91-3,165.77

Finding the Fourth Proportional to 5,156.35, 7,115.91 and 3,165.77

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Solution

The fourth proportional to 5,156.35, 7,115.91 and 3,165.77 is: 4,368.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.35 : 7,115.91 = 3,165.77 : x
  2. Step 2: Convert to fraction form
    5,156.35/7,115.91 = 3,165.77/x
  3. Step 3: Cross multiply
    5,156.35x = 7,115.91 × 3,165.77
  4. Step 4: Simplify right side
    5,156.35x = 22,527,334.40
  5. Step 5: Solve for x
    x = 22,527,334.40/5,156.35
  6. Step 6: Final answer
    x = 4,368.85

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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.