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Finding the Fourth Proportional to 1,951.21, 2,926.71 and 718.54

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Solution

The fourth proportional to 1,951.21, 2,926.71 and 718.54 is: 1,077.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951.21 : 2,926.71 = 718.54 : x
  2. Step 2: Convert to fraction form
    1,951.21/2,926.71 = 718.54/x
  3. Step 3: Cross multiply
    1,951.21x = 2,926.71 × 718.54
  4. Step 4: Simplify right side
    1,951.21x = 2,102,958.20
  5. Step 5: Solve for x
    x = 2,102,958.20/1,951.21
  6. Step 6: Final answer
    x = 1,077.77

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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.