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Finding the Fourth Proportional to 2,886.78, 3,983.54 and 1,707.62

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Solution

The fourth proportional to 2,886.78, 3,983.54 and 1,707.62 is: 2,356.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,886.78 : 3,983.54 = 1,707.62 : x
  2. Step 2: Convert to fraction form
    2,886.78/3,983.54 = 1,707.62/x
  3. Step 3: Cross multiply
    2,886.78x = 3,983.54 × 1,707.62
  4. Step 4: Simplify right side
    2,886.78x = 6,802,372.57
  5. Step 5: Solve for x
    x = 6,802,372.57/2,886.78
  6. Step 6: Final answer
    x = 2,356.39

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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.