Home / 2,186.60-3,015.42-1,688.42

Finding the Fourth Proportional to 2,186.60, 3,015.42 and 1,688.42

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Solution

The fourth proportional to 2,186.60, 3,015.42 and 1,688.42 is: 2,328.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.60 : 3,015.42 = 1,688.42 : x
  2. Step 2: Convert to fraction form
    2,186.60/3,015.42 = 1,688.42/x
  3. Step 3: Cross multiply
    2,186.60x = 3,015.42 × 1,688.42
  4. Step 4: Simplify right side
    2,186.60x = 5,091,295.44
  5. Step 5: Solve for x
    x = 5,091,295.44/2,186.60
  6. Step 6: Final answer
    x = 2,328.41

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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.