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Finding the Fourth Proportional to 5,071.97, 6,998.80 and 2,918.46

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Solution

The fourth proportional to 5,071.97, 6,998.80 and 2,918.46 is: 4,027.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,071.97 : 6,998.80 = 2,918.46 : x
  2. Step 2: Convert to fraction form
    5,071.97/6,998.80 = 2,918.46/x
  3. Step 3: Cross multiply
    5,071.97x = 6,998.80 × 2,918.46
  4. Step 4: Simplify right side
    5,071.97x = 20,425,717.85
  5. Step 5: Solve for x
    x = 20,425,717.85/5,071.97
  6. Step 6: Final answer
    x = 4,027.18

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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.