Home / 3,117.70-4,676.19-926.20

Finding the Fourth Proportional to 3,117.70, 4,676.19 and 926.20

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Solution

The fourth proportional to 3,117.70, 4,676.19 and 926.20 is: 1,389.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.70 : 4,676.19 = 926.20 : x
  2. Step 2: Convert to fraction form
    3,117.70/4,676.19 = 926.20/x
  3. Step 3: Cross multiply
    3,117.70x = 4,676.19 × 926.20
  4. Step 4: Simplify right side
    3,117.70x = 4,331,087.18
  5. Step 5: Solve for x
    x = 4,331,087.18/3,117.70
  6. Step 6: Final answer
    x = 1,389.19

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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.