Home / 9,134.68-12,605.44-5,156.64

Finding the Fourth Proportional to 9,134.68, 12,605.44 and 5,156.64

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Solution

The fourth proportional to 9,134.68, 12,605.44 and 5,156.64 is: 7,115.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,134.68 : 12,605.44 = 5,156.64 : x
  2. Step 2: Convert to fraction form
    9,134.68/12,605.44 = 5,156.64/x
  3. Step 3: Cross multiply
    9,134.68x = 12,605.44 × 5,156.64
  4. Step 4: Simplify right side
    9,134.68x = 65,001,716.12
  5. Step 5: Solve for x
    x = 65,001,716.12/9,134.68
  6. Step 6: Final answer
    x = 7,115.93

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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.