Home / 9,690.64-13,372.68-5,711.92

Finding the Fourth Proportional to 9,690.64, 13,372.68 and 5,711.92

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Solution

The fourth proportional to 9,690.64, 13,372.68 and 5,711.92 is: 7,882.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,690.64 : 13,372.68 = 5,711.92 : x
  2. Step 2: Convert to fraction form
    9,690.64/13,372.68 = 5,711.92/x
  3. Step 3: Cross multiply
    9,690.64x = 13,372.68 × 5,711.92
  4. Step 4: Simplify right side
    9,690.64x = 76,383,678.35
  5. Step 5: Solve for x
    x = 76,383,678.35/9,690.64
  6. Step 6: Final answer
    x = 7,882.21

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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.