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Finding the Fourth Proportional to 8,779.07, 13,218.23 and 7,745.51

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Solution

The fourth proportional to 8,779.07, 13,218.23 and 7,745.51 is: 11,662.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.07 : 13,218.23 = 7,745.51 : x
  2. Step 2: Convert to fraction form
    8,779.07/13,218.23 = 7,745.51/x
  3. Step 3: Cross multiply
    8,779.07x = 13,218.23 × 7,745.51
  4. Step 4: Simplify right side
    8,779.07x = 102,381,827.83
  5. Step 5: Solve for x
    x = 102,381,827.83/8,779.07
  6. Step 6: Final answer
    x = 11,662.04

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.