Home / 3,115.78-4,673.70-926.02

Finding the Fourth Proportional to 3,115.78, 4,673.70 and 926.02

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Solution

The fourth proportional to 3,115.78, 4,673.70 and 926.02 is: 1,389.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.78 : 4,673.70 = 926.02 : x
  2. Step 2: Convert to fraction form
    3,115.78/4,673.70 = 926.02/x
  3. Step 3: Cross multiply
    3,115.78x = 4,673.70 × 926.02
  4. Step 4: Simplify right side
    3,115.78x = 4,327,939.67
  5. Step 5: Solve for x
    x = 4,327,939.67/3,115.78
  6. Step 6: Final answer
    x = 1,389.04

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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.