Home / 7,779.63-11,667.72-3,098.78

Finding the Fourth Proportional to 7,779.63, 11,667.72 and 3,098.78

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Solution

The fourth proportional to 7,779.63, 11,667.72 and 3,098.78 is: 4,647.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.63 : 11,667.72 = 3,098.78 : x
  2. Step 2: Convert to fraction form
    7,779.63/11,667.72 = 3,098.78/x
  3. Step 3: Cross multiply
    7,779.63x = 11,667.72 × 3,098.78
  4. Step 4: Simplify right side
    7,779.63x = 36,155,650.66
  5. Step 5: Solve for x
    x = 36,155,650.66/7,779.63
  6. Step 6: Final answer
    x = 4,647.48

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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.