Home / 3,780.09-5,666.34-1,439.49

Finding the Fourth Proportional to 3,780.09, 5,666.34 and 1,439.49

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Solution

The fourth proportional to 3,780.09, 5,666.34 and 1,439.49 is: 2,157.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.09 : 5,666.34 = 1,439.49 : x
  2. Step 2: Convert to fraction form
    3,780.09/5,666.34 = 1,439.49/x
  3. Step 3: Cross multiply
    3,780.09x = 5,666.34 × 1,439.49
  4. Step 4: Simplify right side
    3,780.09x = 8,156,639.77
  5. Step 5: Solve for x
    x = 8,156,639.77/3,780.09
  6. Step 6: Final answer
    x = 2,157.79

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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.