Home / 1,508.49-2,081.69-845.40

Finding the Fourth Proportional to 1,508.49, 2,081.69 and 845.40

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Solution

The fourth proportional to 1,508.49, 2,081.69 and 845.40 is: 1,166.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508.49 : 2,081.69 = 845.40 : x
  2. Step 2: Convert to fraction form
    1,508.49/2,081.69 = 845.40/x
  3. Step 3: Cross multiply
    1,508.49x = 2,081.69 × 845.40
  4. Step 4: Simplify right side
    1,508.49x = 1,759,860.73
  5. Step 5: Solve for x
    x = 1,759,860.73/1,508.49
  6. Step 6: Final answer
    x = 1,166.64

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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.