Home / 3,118.08-4,676.31-926.30

Finding the Fourth Proportional to 3,118.08, 4,676.31 and 926.30

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Solution

The fourth proportional to 3,118.08, 4,676.31 and 926.30 is: 1,389.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.08 : 4,676.31 = 926.30 : x
  2. Step 2: Convert to fraction form
    3,118.08/4,676.31 = 926.30/x
  3. Step 3: Cross multiply
    3,118.08x = 4,676.31 × 926.30
  4. Step 4: Simplify right side
    3,118.08x = 4,331,637.94
  5. Step 5: Solve for x
    x = 4,331,637.94/3,118.08
  6. Step 6: Final answer
    x = 1,389.20

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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.