Home / 2,163.14-2,982.47-1,278.62

Finding the Fourth Proportional to 2,163.14, 2,982.47 and 1,278.62

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Solution

The fourth proportional to 2,163.14, 2,982.47 and 1,278.62 is: 1,762.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.14 : 2,982.47 = 1,278.62 : x
  2. Step 2: Convert to fraction form
    2,163.14/2,982.47 = 1,278.62/x
  3. Step 3: Cross multiply
    2,163.14x = 2,982.47 × 1,278.62
  4. Step 4: Simplify right side
    2,163.14x = 3,813,445.79
  5. Step 5: Solve for x
    x = 3,813,445.79/2,163.14
  6. Step 6: Final answer
    x = 1,762.92

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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.