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Finding the Fourth Proportional to 2,914.79, 4,043.01 and 2,809.71

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Solution

The fourth proportional to 2,914.79, 4,043.01 and 2,809.71 is: 3,897.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,914.79 : 4,043.01 = 2,809.71 : x
  2. Step 2: Convert to fraction form
    2,914.79/4,043.01 = 2,809.71/x
  3. Step 3: Cross multiply
    2,914.79x = 4,043.01 × 2,809.71
  4. Step 4: Simplify right side
    2,914.79x = 11,359,685.63
  5. Step 5: Solve for x
    x = 11,359,685.63/2,914.79
  6. Step 6: Final answer
    x = 3,897.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.