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Finding the Fourth Proportional to 2,796.56, 4,194.87 and 947.71

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Solution

The fourth proportional to 2,796.56, 4,194.87 and 947.71 is: 1,421.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,796.56 : 4,194.87 = 947.71 : x
  2. Step 2: Convert to fraction form
    2,796.56/4,194.87 = 947.71/x
  3. Step 3: Cross multiply
    2,796.56x = 4,194.87 × 947.71
  4. Step 4: Simplify right side
    2,796.56x = 3,975,503.67
  5. Step 5: Solve for x
    x = 3,975,503.67/2,796.56
  6. Step 6: Final answer
    x = 1,421.57

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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.