Home / 1,508.25-2,081.42-845.07

Finding the Fourth Proportional to 1,508.25, 2,081.42 and 845.07

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Solution

The fourth proportional to 1,508.25, 2,081.42 and 845.07 is: 1,166.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508.25 : 2,081.42 = 845.07 : x
  2. Step 2: Convert to fraction form
    1,508.25/2,081.42 = 845.07/x
  3. Step 3: Cross multiply
    1,508.25x = 2,081.42 × 845.07
  4. Step 4: Simplify right side
    1,508.25x = 1,758,941.37
  5. Step 5: Solve for x
    x = 1,758,941.37/1,508.25
  6. Step 6: Final answer
    x = 1,166.21

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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.