Home / 3,160.50-4,362.40-2,115.60

Finding the Fourth Proportional to 3,160.50, 4,362.40 and 2,115.60

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Solution

The fourth proportional to 3,160.50, 4,362.40 and 2,115.60 is: 2,920.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,160.50 : 4,362.40 = 2,115.60 : x
  2. Step 2: Convert to fraction form
    3,160.50/4,362.40 = 2,115.60/x
  3. Step 3: Cross multiply
    3,160.50x = 4,362.40 × 2,115.60
  4. Step 4: Simplify right side
    3,160.50x = 9,229,093.44
  5. Step 5: Solve for x
    x = 9,229,093.44/3,160.50
  6. Step 6: Final answer
    x = 2,920.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.