Home / 3,031.21-4,178.30-2,776.97

Finding the Fourth Proportional to 3,031.21, 4,178.30 and 2,776.97

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Solution

The fourth proportional to 3,031.21, 4,178.30 and 2,776.97 is: 3,827.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.21 : 4,178.30 = 2,776.97 : x
  2. Step 2: Convert to fraction form
    3,031.21/4,178.30 = 2,776.97/x
  3. Step 3: Cross multiply
    3,031.21x = 4,178.30 × 2,776.97
  4. Step 4: Simplify right side
    3,031.21x = 11,602,985.92
  5. Step 5: Solve for x
    x = 11,602,985.92/3,031.21
  6. Step 6: Final answer
    x = 3,827.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.