Home / 1,981.63-2,734.43-1,508.35

Finding the Fourth Proportional to 1,981.63, 2,734.43 and 1,508.35

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Solution

The fourth proportional to 1,981.63, 2,734.43 and 1,508.35 is: 2,081.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.63 : 2,734.43 = 1,508.35 : x
  2. Step 2: Convert to fraction form
    1,981.63/2,734.43 = 1,508.35/x
  3. Step 3: Cross multiply
    1,981.63x = 2,734.43 × 1,508.35
  4. Step 4: Simplify right side
    1,981.63x = 4,124,473.28
  5. Step 5: Solve for x
    x = 4,124,473.28/1,981.63
  6. Step 6: Final answer
    x = 2,081.36

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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.