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Finding the Fourth Proportional to 8,556.84, 11,807.01 and 4,779.84

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Solution

The fourth proportional to 8,556.84, 11,807.01 and 4,779.84 is: 6,595.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,556.84 : 11,807.01 = 4,779.84 : x
  2. Step 2: Convert to fraction form
    8,556.84/11,807.01 = 4,779.84/x
  3. Step 3: Cross multiply
    8,556.84x = 11,807.01 × 4,779.84
  4. Step 4: Simplify right side
    8,556.84x = 56,435,618.68
  5. Step 5: Solve for x
    x = 56,435,618.68/8,556.84
  6. Step 6: Final answer
    x = 6,595.38

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Half scale
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Double scale
Find fourth proportional to 8,557.84, 11,808.39 and 4,780.84
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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.