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Finding the Fourth Proportional to 3,394.47, 5,087.63 and 2,947.47

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Solution

The fourth proportional to 3,394.47, 5,087.63 and 2,947.47 is: 4,417.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,394.47 : 5,087.63 = 2,947.47 : x
  2. Step 2: Convert to fraction form
    3,394.47/5,087.63 = 2,947.47/x
  3. Step 3: Cross multiply
    3,394.47x = 5,087.63 × 2,947.47
  4. Step 4: Simplify right side
    3,394.47x = 14,995,622.06
  5. Step 5: Solve for x
    x = 14,995,622.06/3,394.47
  6. Step 6: Final answer
    x = 4,417.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.