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Finding the Fourth Proportional to 2,926.67, 4,390.79 and 846.85

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Solution

The fourth proportional to 2,926.67, 4,390.79 and 846.85 is: 1,270.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,926.67 : 4,390.79 = 846.85 : x
  2. Step 2: Convert to fraction form
    2,926.67/4,390.79 = 846.85/x
  3. Step 3: Cross multiply
    2,926.67x = 4,390.79 × 846.85
  4. Step 4: Simplify right side
    2,926.67x = 3,718,325.30
  5. Step 5: Solve for x
    x = 3,718,325.30/2,926.67
  6. Step 6: Final answer
    x = 1,270.50

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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.