Home / 2,109.16-2,910.63-1,177.66

Finding the Fourth Proportional to 2,109.16, 2,910.63 and 1,177.66

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Solution

The fourth proportional to 2,109.16, 2,910.63 and 1,177.66 is: 1,625.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109.16 : 2,910.63 = 1,177.66 : x
  2. Step 2: Convert to fraction form
    2,109.16/2,910.63 = 1,177.66/x
  3. Step 3: Cross multiply
    2,109.16x = 2,910.63 × 1,177.66
  4. Step 4: Simplify right side
    2,109.16x = 3,427,732.53
  5. Step 5: Solve for x
    x = 3,427,732.53/2,109.16
  6. Step 6: Final answer
    x = 1,625.16

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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.