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Finding the Fourth Proportional to 7,779.78, 11,670.35 and 3,337.65

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Solution

The fourth proportional to 7,779.78, 11,670.35 and 3,337.65 is: 5,006.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.78 : 11,670.35 = 3,337.65 : x
  2. Step 2: Convert to fraction form
    7,779.78/11,670.35 = 3,337.65/x
  3. Step 3: Cross multiply
    7,779.78x = 11,670.35 × 3,337.65
  4. Step 4: Simplify right side
    7,779.78x = 38,951,526.99
  5. Step 5: Solve for x
    x = 38,951,526.99/7,779.78
  6. Step 6: Final answer
    x = 5,006.76

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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.