Home / 3,318.10-4,977.10-852.90

Finding the Fourth Proportional to 3,318.10, 4,977.10 and 852.90

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Solution

The fourth proportional to 3,318.10, 4,977.10 and 852.90 is: 1,279.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.10 : 4,977.10 = 852.90 : x
  2. Step 2: Convert to fraction form
    3,318.10/4,977.10 = 852.90/x
  3. Step 3: Cross multiply
    3,318.10x = 4,977.10 × 852.90
  4. Step 4: Simplify right side
    3,318.10x = 4,244,968.59
  5. Step 5: Solve for x
    x = 4,244,968.59/3,318.10
  6. Step 6: Final answer
    x = 1,279.34

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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.