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Finding the Fourth Proportional to 4,779.56, 7,167.18 and 1,491.68

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Solution

The fourth proportional to 4,779.56, 7,167.18 and 1,491.68 is: 2,236.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,779.56 : 7,167.18 = 1,491.68 : x
  2. Step 2: Convert to fraction form
    4,779.56/7,167.18 = 1,491.68/x
  3. Step 3: Cross multiply
    4,779.56x = 7,167.18 × 1,491.68
  4. Step 4: Simplify right side
    4,779.56x = 10,691,139.06
  5. Step 5: Solve for x
    x = 10,691,139.06/4,779.56
  6. Step 6: Final answer
    x = 2,236.85

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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.