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Finding the Fourth Proportional to 4,289.79, 5,918.94 and 2,716.98

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Solution

The fourth proportional to 4,289.79, 5,918.94 and 2,716.98 is: 3,748.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,289.79 : 5,918.94 = 2,716.98 : x
  2. Step 2: Convert to fraction form
    4,289.79/5,918.94 = 2,716.98/x
  3. Step 3: Cross multiply
    4,289.79x = 5,918.94 × 2,716.98
  4. Step 4: Simplify right side
    4,289.79x = 16,081,641.60
  5. Step 5: Solve for x
    x = 16,081,641.60/4,289.79
  6. Step 6: Final answer
    x = 3,748.82

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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.