Home / 3,765.86-5,646.72-2,990.84

Finding the Fourth Proportional to 3,765.86, 5,646.72 and 2,990.84

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Solution

The fourth proportional to 3,765.86, 5,646.72 and 2,990.84 is: 4,484.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,765.86 : 5,646.72 = 2,990.84 : x
  2. Step 2: Convert to fraction form
    3,765.86/5,646.72 = 2,990.84/x
  3. Step 3: Cross multiply
    3,765.86x = 5,646.72 × 2,990.84
  4. Step 4: Simplify right side
    3,765.86x = 16,888,436.04
  5. Step 5: Solve for x
    x = 16,888,436.04/3,765.86
  6. Step 6: Final answer
    x = 4,484.62

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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.