Home / 3,385.10-5,089.80-3,312.20

Finding the Fourth Proportional to 3,385.10, 5,089.80 and 3,312.20

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Solution

The fourth proportional to 3,385.10, 5,089.80 and 3,312.20 is: 4,980.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,385.10 : 5,089.80 = 3,312.20 : x
  2. Step 2: Convert to fraction form
    3,385.10/5,089.80 = 3,312.20/x
  3. Step 3: Cross multiply
    3,385.10x = 5,089.80 × 3,312.20
  4. Step 4: Simplify right side
    3,385.10x = 16,858,435.56
  5. Step 5: Solve for x
    x = 16,858,435.56/3,385.10
  6. Step 6: Final answer
    x = 4,980.19

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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.