Home / 2,186.07-3,015.57-1,398.75

Finding the Fourth Proportional to 2,186.07, 3,015.57 and 1,398.75

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Solution

The fourth proportional to 2,186.07, 3,015.57 and 1,398.75 is: 1,929.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.07 : 3,015.57 = 1,398.75 : x
  2. Step 2: Convert to fraction form
    2,186.07/3,015.57 = 1,398.75/x
  3. Step 3: Cross multiply
    2,186.07x = 3,015.57 × 1,398.75
  4. Step 4: Simplify right side
    2,186.07x = 4,218,028.54
  5. Step 5: Solve for x
    x = 4,218,028.54/2,186.07
  6. Step 6: Final answer
    x = 1,929.50

Related Problems

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Half scale
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Double scale
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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.