Home / 5,780.62-8,670.78-1,620.92

Finding the Fourth Proportional to 5,780.62, 8,670.78 and 1,620.92

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Solution

The fourth proportional to 5,780.62, 8,670.78 and 1,620.92 is: 2,431.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780.62 : 8,670.78 = 1,620.92 : x
  2. Step 2: Convert to fraction form
    5,780.62/8,670.78 = 1,620.92/x
  3. Step 3: Cross multiply
    5,780.62x = 8,670.78 × 1,620.92
  4. Step 4: Simplify right side
    5,780.62x = 14,054,613.62
  5. Step 5: Solve for x
    x = 14,054,613.62/5,780.62
  6. Step 6: Final answer
    x = 2,431.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.