Home / 2,186.29-3,015.11-1,400.18

Finding the Fourth Proportional to 2,186.29, 3,015.11 and 1,400.18

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Solution

The fourth proportional to 2,186.29, 3,015.11 and 1,400.18 is: 1,930.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.29 : 3,015.11 = 1,400.18 : x
  2. Step 2: Convert to fraction form
    2,186.29/3,015.11 = 1,400.18/x
  3. Step 3: Cross multiply
    2,186.29x = 3,015.11 × 1,400.18
  4. Step 4: Simplify right side
    2,186.29x = 4,221,689.72
  5. Step 5: Solve for x
    x = 4,221,689.72/2,186.29
  6. Step 6: Final answer
    x = 1,930.99

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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.