Home / 3,118.13-4,676.68-1,143.55

Finding the Fourth Proportional to 3,118.13, 4,676.68 and 1,143.55

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Solution

The fourth proportional to 3,118.13, 4,676.68 and 1,143.55 is: 1,715.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.13 : 4,676.68 = 1,143.55 : x
  2. Step 2: Convert to fraction form
    3,118.13/4,676.68 = 1,143.55/x
  3. Step 3: Cross multiply
    3,118.13x = 4,676.68 × 1,143.55
  4. Step 4: Simplify right side
    3,118.13x = 5,348,017.41
  5. Step 5: Solve for x
    x = 5,348,017.41/3,118.13
  6. Step 6: Final answer
    x = 1,715.14

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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.