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Finding the Fourth Proportional to 4,779.12, 7,162.08 and 4,258.56

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Solution

The fourth proportional to 4,779.12, 7,162.08 and 4,258.56 is: 6,381.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,779.12 : 7,162.08 = 4,258.56 : x
  2. Step 2: Convert to fraction form
    4,779.12/7,162.08 = 4,258.56/x
  3. Step 3: Cross multiply
    4,779.12x = 7,162.08 × 4,258.56
  4. Step 4: Simplify right side
    4,779.12x = 30,500,147.40
  5. Step 5: Solve for x
    x = 30,500,147.40/4,779.12
  6. Step 6: Final answer
    x = 6,381.96

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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.