Home / 2,186.50-3,016.51-1,440.85

Finding the Fourth Proportional to 2,186.50, 3,016.51 and 1,440.85

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Solution

The fourth proportional to 2,186.50, 3,016.51 and 1,440.85 is: 1,987.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.50 : 3,016.51 = 1,440.85 : x
  2. Step 2: Convert to fraction form
    2,186.50/3,016.51 = 1,440.85/x
  3. Step 3: Cross multiply
    2,186.50x = 3,016.51 × 1,440.85
  4. Step 4: Simplify right side
    2,186.50x = 4,346,338.43
  5. Step 5: Solve for x
    x = 4,346,338.43/2,186.50
  6. Step 6: Final answer
    x = 1,987.81

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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.