Home / 5,697.69-7,853.40-3,808.58

Finding the Fourth Proportional to 5,697.69, 7,853.40 and 3,808.58

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Solution

The fourth proportional to 5,697.69, 7,853.40 and 3,808.58 is: 5,249.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,697.69 : 7,853.40 = 3,808.58 : x
  2. Step 2: Convert to fraction form
    5,697.69/7,853.40 = 3,808.58/x
  3. Step 3: Cross multiply
    5,697.69x = 7,853.40 × 3,808.58
  4. Step 4: Simplify right side
    5,697.69x = 29,910,336.91
  5. Step 5: Solve for x
    x = 29,910,336.91/5,697.69
  6. Step 6: Final answer
    x = 5,249.55

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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.