Home / 6,823.72-9,419.86-5,145.80

Finding the Fourth Proportional to 6,823.72, 9,419.86 and 5,145.80

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Solution

The fourth proportional to 6,823.72, 9,419.86 and 5,145.80 is: 7,103.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,823.72 : 9,419.86 = 5,145.80 : x
  2. Step 2: Convert to fraction form
    6,823.72/9,419.86 = 5,145.80/x
  3. Step 3: Cross multiply
    6,823.72x = 9,419.86 × 5,145.80
  4. Step 4: Simplify right side
    6,823.72x = 48,472,715.59
  5. Step 5: Solve for x
    x = 48,472,715.59/6,823.72
  6. Step 6: Final answer
    x = 7,103.56

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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.