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Finding the Fourth Proportional to 4,779.54, 7,170.15 and 1,491.81

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Solution

The fourth proportional to 4,779.54, 7,170.15 and 1,491.81 is: 2,237.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,779.54 : 7,170.15 = 1,491.81 : x
  2. Step 2: Convert to fraction form
    4,779.54/7,170.15 = 1,491.81/x
  3. Step 3: Cross multiply
    4,779.54x = 7,170.15 × 1,491.81
  4. Step 4: Simplify right side
    4,779.54x = 10,696,501.47
  5. Step 5: Solve for x
    x = 10,696,501.47/4,779.54
  6. Step 6: Final answer
    x = 2,237.98

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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.