Home / 3,126.34-4,689.05-1,178.11

Finding the Fourth Proportional to 3,126.34, 4,689.05 and 1,178.11

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Solution

The fourth proportional to 3,126.34, 4,689.05 and 1,178.11 is: 1,766.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.34 : 4,689.05 = 1,178.11 : x
  2. Step 2: Convert to fraction form
    3,126.34/4,689.05 = 1,178.11/x
  3. Step 3: Cross multiply
    3,126.34x = 4,689.05 × 1,178.11
  4. Step 4: Simplify right side
    3,126.34x = 5,524,193.25
  5. Step 5: Solve for x
    x = 5,524,193.25/3,126.34
  6. Step 6: Final answer
    x = 1,766.99

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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.