Home / 1,508.31-2,081.43-845.19

Finding the Fourth Proportional to 1,508.31, 2,081.43 and 845.19

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Solution

The fourth proportional to 1,508.31, 2,081.43 and 845.19 is: 1,166.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508.31 : 2,081.43 = 845.19 : x
  2. Step 2: Convert to fraction form
    1,508.31/2,081.43 = 845.19/x
  3. Step 3: Cross multiply
    1,508.31x = 2,081.43 × 845.19
  4. Step 4: Simplify right side
    1,508.31x = 1,759,203.82
  5. Step 5: Solve for x
    x = 1,759,203.82/1,508.31
  6. Step 6: Final answer
    x = 1,166.34

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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.