Home / 9,156.05-12,635.59-5,177.75

Finding the Fourth Proportional to 9,156.05, 12,635.59 and 5,177.75

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Solution

The fourth proportional to 9,156.05, 12,635.59 and 5,177.75 is: 7,145.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,156.05 : 12,635.59 = 5,177.75 : x
  2. Step 2: Convert to fraction form
    9,156.05/12,635.59 = 5,177.75/x
  3. Step 3: Cross multiply
    9,156.05x = 12,635.59 × 5,177.75
  4. Step 4: Simplify right side
    9,156.05x = 65,423,926.12
  5. Step 5: Solve for x
    x = 65,423,926.12/9,156.05
  6. Step 6: Final answer
    x = 7,145.44

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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.