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Finding the Fourth Proportional to 1,951.86, 2,926.56 and 653.42

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Solution

The fourth proportional to 1,951.86, 2,926.56 and 653.42 is: 979.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951.86 : 2,926.56 = 653.42 : x
  2. Step 2: Convert to fraction form
    1,951.86/2,926.56 = 653.42/x
  3. Step 3: Cross multiply
    1,951.86x = 2,926.56 × 653.42
  4. Step 4: Simplify right side
    1,951.86x = 1,912,272.84
  5. Step 5: Solve for x
    x = 1,912,272.84/1,951.86
  6. Step 6: Final answer
    x = 979.72

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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.