Home / 5,122.60-7,678.40-2,926.60

Finding the Fourth Proportional to 5,122.60, 7,678.40 and 2,926.60

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Solution

The fourth proportional to 5,122.60, 7,678.40 and 2,926.60 is: 4,386.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.60 : 7,678.40 = 2,926.60 : x
  2. Step 2: Convert to fraction form
    5,122.60/7,678.40 = 2,926.60/x
  3. Step 3: Cross multiply
    5,122.60x = 7,678.40 × 2,926.60
  4. Step 4: Simplify right side
    5,122.60x = 22,471,605.44
  5. Step 5: Solve for x
    x = 22,471,605.44/5,122.60
  6. Step 6: Final answer
    x = 4,386.76

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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.