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Finding the Fourth Proportional to 4,778.51, 7,167.51 and 1,491.36

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Solution

The fourth proportional to 4,778.51, 7,167.51 and 1,491.36 is: 2,236.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.51 : 7,167.51 = 1,491.36 : x
  2. Step 2: Convert to fraction form
    4,778.51/7,167.51 = 1,491.36/x
  3. Step 3: Cross multiply
    4,778.51x = 7,167.51 × 1,491.36
  4. Step 4: Simplify right side
    4,778.51x = 10,689,337.71
  5. Step 5: Solve for x
    x = 10,689,337.71/4,778.51
  6. Step 6: Final answer
    x = 2,236.96

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.