Home / 3,421.11-5,133.27-1,776.78

Finding the Fourth Proportional to 3,421.11, 5,133.27 and 1,776.78

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Solution

The fourth proportional to 3,421.11, 5,133.27 and 1,776.78 is: 2,666.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.11 : 5,133.27 = 1,776.78 : x
  2. Step 2: Convert to fraction form
    3,421.11/5,133.27 = 1,776.78/x
  3. Step 3: Cross multiply
    3,421.11x = 5,133.27 × 1,776.78
  4. Step 4: Simplify right side
    3,421.11x = 9,120,691.47
  5. Step 5: Solve for x
    x = 9,120,691.47/3,421.11
  6. Step 6: Final answer
    x = 2,666.00

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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.