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Finding the Fourth Proportional to 2,999.93, 4,139.73 and 1,655.49

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Solution

The fourth proportional to 2,999.93, 4,139.73 and 1,655.49 is: 2,284.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.93 : 4,139.73 = 1,655.49 : x
  2. Step 2: Convert to fraction form
    2,999.93/4,139.73 = 1,655.49/x
  3. Step 3: Cross multiply
    2,999.93x = 4,139.73 × 1,655.49
  4. Step 4: Simplify right side
    2,999.93x = 6,853,281.62
  5. Step 5: Solve for x
    x = 6,853,281.62/2,999.93
  6. Step 6: Final answer
    x = 2,284.48

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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.