Home / 3,776.72-5,666.70-2,130.80

Finding the Fourth Proportional to 3,776.72, 5,666.70 and 2,130.80

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Solution

The fourth proportional to 3,776.72, 5,666.70 and 2,130.80 is: 3,197.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,776.72 : 5,666.70 = 2,130.80 : x
  2. Step 2: Convert to fraction form
    3,776.72/5,666.70 = 2,130.80/x
  3. Step 3: Cross multiply
    3,776.72x = 5,666.70 × 2,130.80
  4. Step 4: Simplify right side
    3,776.72x = 12,074,604.36
  5. Step 5: Solve for x
    x = 12,074,604.36/3,776.72
  6. Step 6: Final answer
    x = 3,197.11

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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.