Home / 2,077.75-3,117.90-845.17

Finding the Fourth Proportional to 2,077.75, 3,117.90 and 845.17

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Solution

The fourth proportional to 2,077.75, 3,117.90 and 845.17 is: 1,268.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,077.75 : 3,117.90 = 845.17 : x
  2. Step 2: Convert to fraction form
    2,077.75/3,117.90 = 845.17/x
  3. Step 3: Cross multiply
    2,077.75x = 3,117.90 × 845.17
  4. Step 4: Simplify right side
    2,077.75x = 2,635,155.54
  5. Step 5: Solve for x
    x = 2,635,155.54/2,077.75
  6. Step 6: Final answer
    x = 1,268.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.