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Finding the Fourth Proportional to 1,486.49, 2,051.14 and 856.96

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Solution

The fourth proportional to 1,486.49, 2,051.14 and 856.96 is: 1,182.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,486.49 : 2,051.14 = 856.96 : x
  2. Step 2: Convert to fraction form
    1,486.49/2,051.14 = 856.96/x
  3. Step 3: Cross multiply
    1,486.49x = 2,051.14 × 856.96
  4. Step 4: Simplify right side
    1,486.49x = 1,757,750.06
  5. Step 5: Solve for x
    x = 1,757,750.06/1,486.49
  6. Step 6: Final answer
    x = 1,182.49

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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.