Home / 2,116.11-2,921.01-1,276.85

Finding the Fourth Proportional to 2,116.11, 2,921.01 and 1,276.85

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Solution

The fourth proportional to 2,116.11, 2,921.01 and 1,276.85 is: 1,762.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.11 : 2,921.01 = 1,276.85 : x
  2. Step 2: Convert to fraction form
    2,116.11/2,921.01 = 1,276.85/x
  3. Step 3: Cross multiply
    2,116.11x = 2,921.01 × 1,276.85
  4. Step 4: Simplify right side
    2,116.11x = 3,729,684.88
  5. Step 5: Solve for x
    x = 3,729,684.88/2,116.11
  6. Step 6: Final answer
    x = 1,762.52

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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.