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Finding the Fourth Proportional to 8,556.39, 11,807.82 and 4,779.54

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Solution

The fourth proportional to 8,556.39, 11,807.82 and 4,779.54 is: 6,595.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,556.39 : 11,807.82 = 4,779.54 : x
  2. Step 2: Convert to fraction form
    8,556.39/11,807.82 = 4,779.54/x
  3. Step 3: Cross multiply
    8,556.39x = 11,807.82 × 4,779.54
  4. Step 4: Simplify right side
    8,556.39x = 56,435,948.00
  5. Step 5: Solve for x
    x = 56,435,948.00/8,556.39
  6. Step 6: Final answer
    x = 6,595.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.