Home / 9,679.68-13,358.97-5,431.89

Finding the Fourth Proportional to 9,679.68, 13,358.97 and 5,431.89

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Solution

The fourth proportional to 9,679.68, 13,358.97 and 5,431.89 is: 7,496.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,679.68 : 13,358.97 = 5,431.89 : x
  2. Step 2: Convert to fraction form
    9,679.68/13,358.97 = 5,431.89/x
  3. Step 3: Cross multiply
    9,679.68x = 13,358.97 × 5,431.89
  4. Step 4: Simplify right side
    9,679.68x = 72,564,455.55
  5. Step 5: Solve for x
    x = 72,564,455.55/9,679.68
  6. Step 6: Final answer
    x = 7,496.58

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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.