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Finding the Fourth Proportional to 2,996.79, 4,135.64 and 1,670.63

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Solution

The fourth proportional to 2,996.79, 4,135.64 and 1,670.63 is: 2,305.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,996.79 : 4,135.64 = 1,670.63 : x
  2. Step 2: Convert to fraction form
    2,996.79/4,135.64 = 1,670.63/x
  3. Step 3: Cross multiply
    2,996.79x = 4,135.64 × 1,670.63
  4. Step 4: Simplify right side
    2,996.79x = 6,909,095.22
  5. Step 5: Solve for x
    x = 6,909,095.22/2,996.79
  6. Step 6: Final answer
    x = 2,305.50

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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.